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: Perform URL format validation Bug #13786

* Tests for validity of supplied URL before attempting to add it

BUrl's isValid() is used to test the URL

Change-Id: I49bfc266177f16052a46ca3dbc1fd6e8dd1ab6ae
Reviewed-on: https://review.haiku-os.org/c/1020
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

pkgman: Organize commands by category

pkgman: Make use of BRequest::Process()

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.

Mostly style-related changes to package kit:
* drop 'Haiku' namespace
* rename 'Package' namespace to 'BPackageKit'
* renamed all public classes to begin with a 'B'
* renamed BPackageKit::Roster to BPackageKit::BPackageRoster to not
clash with the BRoster from the application kit.
* fix some instances of public headers including private ones

Some functional changes, too:
* JobQueue now removes and deletes dependants of failed jobs
automatically
* JobQueue supports waiting for jobs to become runnable
* added a couple of InitCheck() methods where they make sense
and invoke those in users of these classes



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40287 a95241bf-73f2-0310-859d-f6bbb57e9c96

* more work on the package kit, repositories can now be added and
refreshed


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40280 a95241bf-73f2-0310-859d-f6bbb57e9c96

* added support for interactive decisions to package kit and pkgman


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40268 a95241bf-73f2-0310-859d-f6bbb57e9c96

* WIP-commit of the first parts of the package kit and the pkgman
(console-)tool


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40261 a95241bf-73f2-0310-859d-f6bbb57e9c96

pkgman: Organize commands by category

pkgman: Make use of BRequest::Process()

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.

Mostly style-related changes to package kit:
* drop 'Haiku' namespace
* rename 'Package' namespace to 'BPackageKit'
* renamed all public classes to begin with a 'B'
* renamed BPackageKit::Roster to BPackageKit::BPackageRoster to not
clash with the BRoster from the application kit.
* fix some instances of public headers including private ones

Some functional changes, too:
* JobQueue now removes and deletes dependants of failed jobs
automatically
* JobQueue supports waiting for jobs to become runnable
* added a couple of InitCheck() methods where they make sense
and invoke those in users of these classes



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40287 a95241bf-73f2-0310-859d-f6bbb57e9c96

* more work on the package kit, repositories can now be added and
refreshed


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40280 a95241bf-73f2-0310-859d-f6bbb57e9c96

* added support for interactive decisions to package kit and pkgman


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40268 a95241bf-73f2-0310-859d-f6bbb57e9c96

* WIP-commit of the first parts of the package kit and the pkgman
(console-)tool


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40261 a95241bf-73f2-0310-859d-f6bbb57e9c96