Don't try to start a started frame, don't try to end a not started
frame.

Based on a patch from Andras, this removes a set of un-used
debugging type strings from all lang-pack resource files.

With database document, any contents of the Pictures folder ( afaics only basic dialogs store content here ) is never cleaned up between saves.

This patch turns on sorting in many listboxes containing template or region names in Impress.
Contributed under license LGPLv3+/MPL.

This commit enables LTO for all shared libraries.
Build takes much longer. Use just with gcc-4.5 or later.