pkgman: Use natural sorting in "search" output.

Fixes #18676.

pkgman: change default search scope

* Reduce default search scope to: "name", "summary", and "provides".
* Add a new "--search-scope=<scope>" option that allows to either limit
the search to packages names (-s name), or to replicate the previous
behavior of searching everywhere in the package info (-s full).

Motivation for the change:

The ever increasing number of packages available for Haiku was impacting
pkgman search usefulness, as it easily returns too many packages (what a
wonderful problem to have :-D).

Limiting the default search scope helps with that, and the old behavior
is kept "just an option away".

Change-Id: I5b456b90137237134eee7ca7ee501bf8e3767440
Reviewed-on: https://review.haiku-os.org/c/haiku/+/5616
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

pkgman: fix for syntax (help)

The tool "pkgman" was not showing it's help text
and this seems to be somehow related to the
initialization of constants such as
"kCommandCategoryPackages"; these values seems to
be coming through as empty-string for some reason.
I am changing those to be "#define" of regular
C-Strings and this seems to resolve the problem.
These values only seem to be used to group the
possible commands for production of the syntax or
help text - there do not seem to be any deeper
impacts beyond that functionality.

Change-Id: If9cd61462cd7f1f1b5ab2ece521bb3f00a1ba246
Reviewed-on: https://review.haiku-os.org/c/1139
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

pkgman search: Add --requirements option

pkgman: Add --debug option for most commands

* Add CommonOptions class and add an instance to Command. It supports a
debug level.
* full-sync, install, search, uninstall, update: Add option --debug.
This allows getting some debug output from the solver in cases where
the result seems weird.

Move TextTable from pkgman to libshared

pkgman search: Add -D/--details

* Add a detailed listing mode (-D/--details), which prints a table with
repository/installation location name, package name, package version,
package architecture.
* Make the normal listing more compact. Now there's only one row per
package. The "Installed" column has been replaced by "Status" which
displays if/where the package is installed and whether it matches the
repository version.

Remove /boot/common for good

* Remove support for the "common" installation location from packagefs,
package kit, package daemon, package managers.
* Rename the B_COMMON_*_DIRECTORY constants referring to writable
directories to B_SYSTEM_*_DIRECTORY.
* Remove/adjust the use of various B_COMMON_*_DIRECTORY constants.
I'm sure some occurrence still remain. They can be adjusted when the
remaining B_COMMON_*_DIRECTORY constants are removed.

Refactor reusable pkgman code into libpackage

* Move RepositoryBuilder class to libpackage and add B* prefix to name.
* Pull BPackageManager class out of PackageManager and move to
libpackage. The base class is customizable via three handler objects
responsible for transaction handling, request execution, respectively
user interaction.
* Reorganize _ApplyPackageChanges(): Now we first prepare the
transactions for all affected installation locations (downloading
files etc.) and then commit them.

Fix build of pkgman with gcc2.

* I have no idea why, but gcc2 considers BSolverRepository* and
PackageManager::InstalledRepository* as distinct pointer types, which
it doesn't like to compare without a cast. Circumvent by static
casting to BSolverRepository*.

pkgman: PackageManager: Use flags instead of bools in ctor

pkgman search: enable search in ~/config

pkgman search: add -a/--all

Can be specified instead of a search string. Lists all packages.

pkgman search: '-i' option wasn't handled

pkgman: Organize commands by category

pkgman: Refactoring -> PackageManager

Move common and reusable functionality from "search" and "install" to
new PackageManager class.

pkgman: C++-ify the command handling

There's now a Command class that must be derived and registered with
a CommandManager, all simplified by a REGISTER_COMMAND macro. That gets
rid of the print_command_usage_and_exit() function copy for every
command, moves the short usage texts to the command implementations,
and avoids any repetition of the command name. When implementing a new
command only a new source file needs to be created, nothing else needs
to be touched.

BSolver/pkgman: Support for searching in provides

* BSolver/LibsolvSolver:
* Add B_FIND_IN_NAME and make searching in the names explicit.
* Add B_FIND_IN_PROVIDES to search the packages' provides list.
* pkgman: Also search in provides.

pkgman: Add "search" command

pkgman: Add --debug option for most commands

* Add CommonOptions class and add an instance to Command. It supports a
debug level.
* full-sync, install, search, uninstall, update: Add option --debug.
This allows getting some debug output from the solver in cases where
the result seems weird.

Move TextTable from pkgman to libshared

pkgman search: Add -D/--details

* Add a detailed listing mode (-D/--details), which prints a table with
repository/installation location name, package name, package version,
package architecture.
* Make the normal listing more compact. Now there's only one row per
package. The "Installed" column has been replaced by "Status" which
displays if/where the package is installed and whether it matches the
repository version.

Remove /boot/common for good

* Remove support for the "common" installation location from packagefs,
package kit, package daemon, package managers.
* Rename the B_COMMON_*_DIRECTORY constants referring to writable
directories to B_SYSTEM_*_DIRECTORY.
* Remove/adjust the use of various B_COMMON_*_DIRECTORY constants.
I'm sure some occurrence still remain. They can be adjusted when the
remaining B_COMMON_*_DIRECTORY constants are removed.

Refactor reusable pkgman code into libpackage

* Move RepositoryBuilder class to libpackage and add B* prefix to name.
* Pull BPackageManager class out of PackageManager and move to
libpackage. The base class is customizable via three handler objects
responsible for transaction handling, request execution, respectively
user interaction.
* Reorganize _ApplyPackageChanges(): Now we first prepare the
transactions for all affected installation locations (downloading
files etc.) and then commit them.

Fix build of pkgman with gcc2.

* I have no idea why, but gcc2 considers BSolverRepository* and
PackageManager::InstalledRepository* as distinct pointer types, which
it doesn't like to compare without a cast. Circumvent by static
casting to BSolverRepository*.

pkgman: PackageManager: Use flags instead of bools in ctor

pkgman search: enable search in ~/config

pkgman search: add -a/--all

Can be specified instead of a search string. Lists all packages.

pkgman search: '-i' option wasn't handled

pkgman: Organize commands by category

pkgman: Refactoring -> PackageManager

Move common and reusable functionality from "search" and "install" to
new PackageManager class.

pkgman: C++-ify the command handling

There's now a Command class that must be derived and registered with
a CommandManager, all simplified by a REGISTER_COMMAND macro. That gets
rid of the print_command_usage_and_exit() function copy for every
command, moves the short usage texts to the command implementations,
and avoids any repetition of the command name. When implementing a new
command only a new source file needs to be created, nothing else needs
to be touched.

BSolver/pkgman: Support for searching in provides

* BSolver/LibsolvSolver:
* Add B_FIND_IN_NAME and make searching in the names explicit.
* Add B_FIND_IN_PROVIDES to search the packages' provides list.
* pkgman: Also search in provides.

pkgman: Add "search" command