UFO:Alien Invasion Code

* base/textures png crush.

* Recompressed all textures in base/textures/tex_tech with Trimage image compressor and commited those files, where a filesize reduction of at least 5% (up to 43.2%) was achieved

* Reduced filesizes of the tex_tech texture folder by compressing/optimizing the files with pngout

* Renamed xerox_ -> copier_

* [TEXTURE_.MAP_RESCALE-tex_tech/xerox_d-0.5-0.5]
* Rescaled all xerox_d textures on all map files and prefabs (TODO:repeat this operation in data_source)
* Replaced xerox_d texture with a 128x128 pixel version (was 64x64 before)

* replaced textures with gpled version

* image files for the custom hud by H-Hour (gpl2 or later)

* merged transform dialog from darkradiant

* icon for FindReplaceTextures

* texturebrowser is using the ToolbarCreator