Wings-2.1.5 Released

[dgud]

Last release for this year.
Happy Hollidays, all.

- Added Make Normal-Map command, in outliner.
And improved bump-map to normal-map calculations. [Micheus]

- Keyboard shortcuts could sometimes be invoked twice [dgud]

- Outliner could get keyboard focus after some commands though
the window was not marked as focused. Fixes focus issues. [dgud]

- Choosing 'Loaded Font Glyphs' from Development menu was causing
Wings3D crash. Thanks to Fonte Boa [Micheus]

- Fixed the visualization of Tweak "Show Magnet Influence" was not
working. Thanks to Fonte Boa. [Micheus]

- Invalid ps/eps file (absent or invalid token) was causing Wings3D crash.
Thanks to tkbd. [Micheus]

- Fixed broken TGA image loader, wx's targa loader, fails with RLE
encoding, bug is fixed but not released workaround by using wings
own tga loader. Reported by tkbd. [dgud]

- Fixed loading files from root dir on Windows [Micheus].

- Code cleanup and Optimizations [bjorng] [dgud]