package kit: Add pre-uninstall scripts feature.

Just like post-install scripts which run shortly after a package is
installed, pre-uninstall scripts are run just before a package is
removed. Implements enhancement #13427

* Fix script exit code handling vs script launch errors.
* Bump package and repo file version numbers due to new attribute,
unfortunately makes new .hpkg files not backwards compatible.
* Add pre-uninstall functionality, mostly cloning the post-install
except in a few places.
* Discover that _RunQueuedScripts() is never called, a future TODO:?
* Update package documentation for pre-uninstall scripts, and use of
the boot/post-install directory.

Change-Id: I45596255ce74bc102f6e5b606cbf83e4e4347a17
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1504
Reviewed-by: Alexander G. M. Smith <agmsmith@ncf.ca>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

hpkg format: Generalize user/global settings file attributes

* For all identifiers: Rename global settings file to global writable
file. We want to use the respective attribute also for other writable
files, not only settings files.
* User settings file/global writable file info/attribute: Add
isDirectory property/child attribute. This allows declaring global/
user settings directories associated with the package.

hpkg format: Add attribute for declaring post install scripts

hpkg format: Add attributes for declaring users and groups

hpkg format: Add attributes for declaring settings files

Global and user settings files can be declared. For global ones an
update policy can be specified. If not specified, the settings file is
not included in the package, but created by the program (or user) later.
If an update type is specified, it defines what to do with the settings
file when updating the package to a newer version.

User settings files are never included in the package; they are always
created by the program or the user. If the package contains a template/
default settings file, it can be declared, but for informative purposes
only.

Add "base package" package attribute

BPackageVersion: Rename property release to revision

* ... to avoid confusion with the preRelease property. It's also called
"revision" in the HaikuPorts recipes.
* Update libsolv package. Was necessary due to the BPackageVersion
change, but also includes a few more changes.

Add a package info "install-path" attribute

The attribute is intended for simplifying package building. The
package's install path will be used for the package's .self package
symlink, allowing installation to a temporary directory when building
the package.

Add url and sourceURL properties to BPackageInfo

Also extend the parser to accept "url" and "source-url" attributes.

Introduce a pre-release version component

* The version string pattern is now:
<major>[.<minor>[.<micro>]][-<pre>][-<release>]
* Introduce B_HPKG_ATTRIBUTE_ID_PACKAGE_VERSION_PRE_RELEASE package
attribute.
* Add "preRelease" field to BPackageVersionData.
* Add "preRelease" property to BPackageVersion and packagefs's Version.
* Adjust package reader and writer code accordingly.

Add a package info "install-path" attribute

The attribute is intended for simplifying package building. The
package's install path will be used for the package's .self package
symlink, allowing installation to a temporary directory when building
the package.

Add url and sourceURL properties to BPackageInfo

Also extend the parser to accept "url" and "source-url" attributes.

Introduce a pre-release version component

* The version string pattern is now:
<major>[.<minor>[.<micro>]][-<pre>][-<release>]
* Introduce B_HPKG_ATTRIBUTE_ID_PACKAGE_VERSION_PRE_RELEASE package
attribute.
* Add "preRelease" field to BPackageVersionData.
* Add "preRelease" property to BPackageVersion and packagefs's Version.
* Adjust package reader and writer code accordingly.

Largish adjustments to PackagerReaderImpl and package attribute
handling:
* package attributes are now compatible with the low level attribute
handling of other HPKG attributes (such that 'package dump' now shows
package attributes, too)
* dropped type names from hpkg format, the attributes were identified
by IDs already and this simplifies the code considerably. Type names
are now handled in BLowLevelPackageHandler only.
* instead of rolling their own mechanism, high-level package attributes
handling is now implemented via a corresonding set of
AttributeHandler-subclasses
* adjusted package writer to only write package attributes that are
needed (empty ones are left out)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40466 a95241bf-73f2-0310-859d-f6bbb57e9c96

Implemented repository writing:
* fleshed out RepositoryWriterImpl
* renamed BRepositoryHeader to BRepositoryInfo (in accordance with
BPackageInfo)
* adjusted BRepositoryInfo to be able to parse itself from a
driver_settings file
* added package_repo binary (only 'create' works as of yet)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40405 a95241bf-73f2-0310-859d-f6bbb57e9c96

* implemented checking of licenses, such that it is no longer possible
to create a package that refers to a license that is not a system
license or contained in the package
* added package-info flags (currently only approve_license and
system_package)
* adjusted package-reader/writer and pkgman accordingly

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40393 a95241bf-73f2-0310-859d-f6bbb57e9c96

Implemented reading of package info attributes from hpkg file
* added kernel-compatible datatypes for reading package info attribute
values (PackageInfoAttributeValue.h) - these will be used at a later
stage by the package-fs to transport those attributes to userland
when asked to do so (by ioctl)
* implemented parsing of package info attributes in PackageReaderImpl
* added support for compressed package attribute section to
PackageReaderImpl
* completed the writing of package info attributes in PackageWriterImpl
and fixed a couple of bugs exposed by parsing
* adjusted 'package list' to show the package info attributes as they
are found


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40354 a95241bf-73f2-0310-859d-f6bbb57e9c96

hpkg format: Generalize user/global settings file attributes

* For all identifiers: Rename global settings file to global writable
file. We want to use the respective attribute also for other writable
files, not only settings files.
* User settings file/global writable file info/attribute: Add
isDirectory property/child attribute. This allows declaring global/
user settings directories associated with the package.

hpkg format: Add attribute for declaring post install scripts

hpkg format: Add attributes for declaring users and groups

hpkg format: Add attributes for declaring settings files

Global and user settings files can be declared. For global ones an
update policy can be specified. If not specified, the settings file is
not included in the package, but created by the program (or user) later.
If an update type is specified, it defines what to do with the settings
file when updating the package to a newer version.

User settings files are never included in the package; they are always
created by the program or the user. If the package contains a template/
default settings file, it can be declared, but for informative purposes
only.

Add "base package" package attribute

BPackageVersion: Rename property release to revision

* ... to avoid confusion with the preRelease property. It's also called
"revision" in the HaikuPorts recipes.
* Update libsolv package. Was necessary due to the BPackageVersion
change, but also includes a few more changes.

Add a package info "install-path" attribute

The attribute is intended for simplifying package building. The
package's install path will be used for the package's .self package
symlink, allowing installation to a temporary directory when building
the package.

Add url and sourceURL properties to BPackageInfo

Also extend the parser to accept "url" and "source-url" attributes.

Introduce a pre-release version component

* The version string pattern is now:
<major>[.<minor>[.<micro>]][-<pre>][-<release>]
* Introduce B_HPKG_ATTRIBUTE_ID_PACKAGE_VERSION_PRE_RELEASE package
attribute.
* Add "preRelease" field to BPackageVersionData.
* Add "preRelease" property to BPackageVersion and packagefs's Version.
* Adjust package reader and writer code accordingly.

Add a package info "install-path" attribute

The attribute is intended for simplifying package building. The
package's install path will be used for the package's .self package
symlink, allowing installation to a temporary directory when building
the package.

Add url and sourceURL properties to BPackageInfo

Also extend the parser to accept "url" and "source-url" attributes.

Introduce a pre-release version component

* The version string pattern is now:
<major>[.<minor>[.<micro>]][-<pre>][-<release>]
* Introduce B_HPKG_ATTRIBUTE_ID_PACKAGE_VERSION_PRE_RELEASE package
attribute.
* Add "preRelease" field to BPackageVersionData.
* Add "preRelease" property to BPackageVersion and packagefs's Version.
* Adjust package reader and writer code accordingly.

Largish adjustments to PackagerReaderImpl and package attribute
handling:
* package attributes are now compatible with the low level attribute
handling of other HPKG attributes (such that 'package dump' now shows
package attributes, too)
* dropped type names from hpkg format, the attributes were identified
by IDs already and this simplifies the code considerably. Type names
are now handled in BLowLevelPackageHandler only.
* instead of rolling their own mechanism, high-level package attributes
handling is now implemented via a corresonding set of
AttributeHandler-subclasses
* adjusted package writer to only write package attributes that are
needed (empty ones are left out)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40466 a95241bf-73f2-0310-859d-f6bbb57e9c96

Implemented repository writing:
* fleshed out RepositoryWriterImpl
* renamed BRepositoryHeader to BRepositoryInfo (in accordance with
BPackageInfo)
* adjusted BRepositoryInfo to be able to parse itself from a
driver_settings file
* added package_repo binary (only 'create' works as of yet)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40405 a95241bf-73f2-0310-859d-f6bbb57e9c96

* implemented checking of licenses, such that it is no longer possible
to create a package that refers to a license that is not a system
license or contained in the package
* added package-info flags (currently only approve_license and
system_package)
* adjusted package-reader/writer and pkgman accordingly

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40393 a95241bf-73f2-0310-859d-f6bbb57e9c96

Implemented reading of package info attributes from hpkg file
* added kernel-compatible datatypes for reading package info attribute
values (PackageInfoAttributeValue.h) - these will be used at a later
stage by the package-fs to transport those attributes to userland
when asked to do so (by ioctl)
* implemented parsing of package info attributes in PackageReaderImpl
* added support for compressed package attribute section to
PackageReaderImpl
* completed the writing of package info attributes in PackageWriterImpl
and fixed a couple of bugs exposed by parsing
* adjusted 'package list' to show the package info attributes as they
are found


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40354 a95241bf-73f2-0310-859d-f6bbb57e9c96