Icon-O-Matic: Improve saving-related error messages

Improves the errors that are given to the user when exporting to an
HVIF file failed. Examples of errors improved include errors related to
having too many shapes, too many paths, or too many points in a path.

Also changes the icon shown in the alert box from an info icon to an
error icon.

Fixes #13978

Change-Id: I12a08e9857a95bd4d41da029320fa6f8182c3aa5
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6837
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>

Icon-O-Matic: Generalize some classes

* Turns PathContainer, ShapeContainer, StyleContainer into Container.
* Makes Shape use Container for storing Tansformers instead of
reinventing the wheel yet again.
* Moves common logic from AddPathsCommand, AddStylesCommand,
AddShapesCommand, and AddTransformersCommand to AddCommand.
* Factors out common logic from two more commands similar to above.
This adds the MoveCommand and RemoveCommand classes.
* Cleans up some code style.

Change-Id: I59eca94a1c45eac608514f269f6e5f8628f93fab
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6640
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

Icon-O-Matic: Move some functions to header files

Change-Id: I3b12e88e133cfe8e9b0f5830f69d582bbaaa93c2
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6466
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

Icon-O-Matic: Document the importer/exporter classes

Change-Id: I04e920e873efffa0756bb7d0391ac0f898128204
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6465
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>

Icon-O-Matic: Disable printing statistics.

Not really needed, and for now triggers a lot of deprecation warnings.

* Merged weak-symbols branch.
* Fixed trivial merge conflict in src/system/libroot/posix/locale/nl_langinfo.cpp
* Fixed gcc 2 compilation of src/system/glue/init_term_dyn.c.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39571 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Put the remaining libicon.a classes into the BPrivate::Icon namespace.
* Minor cleanup (like removing the extra blank line between the copyright and the
header guard).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20507 a95241bf-73f2-0310-859d-f6bbb57e9c96

various GCC 4 build fixes


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18875 a95241bf-73f2-0310-859d-f6bbb57e9c96

* merged Icon-O-Matic from Ingos layout branch into trunk (r18134:18685)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18686 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Merged weak-symbols branch.
* Fixed trivial merge conflict in src/system/libroot/posix/locale/nl_langinfo.cpp
* Fixed gcc 2 compilation of src/system/glue/init_term_dyn.c.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39571 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Put the remaining libicon.a classes into the BPrivate::Icon namespace.
* Minor cleanup (like removing the extra blank line between the copyright and the
header guard).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20507 a95241bf-73f2-0310-859d-f6bbb57e9c96

various GCC 4 build fixes


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18875 a95241bf-73f2-0310-859d-f6bbb57e9c96

* merged Icon-O-Matic from Ingos layout branch into trunk (r18134:18685)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18686 a95241bf-73f2-0310-859d-f6bbb57e9c96