Clean up style nits in RenderInfantry.
Add support for multiple stand animations.
Hook up C&C infantry.
Hook up RA infantry.
Palette header comes *after* the frame. Fixes #3728.
Add Subtractive blend mode for d2k move-flash.
Fieldloader support for longs.
Add PaletteFromR8 for loading embedded palettes.

The frames that define a custom palette are:
Frame range ->  offset (mem offset)
         38 ->   12007 (22063136)
        178 ->  159947 (21859680)
3494 - 3501 -> 2437846 (23366680)
3502 - 3509 -> 2443858 (23422744)
3510 - 3511 -> 2459105 (23363608)
3621 - 3625 -> 2572352 (23550488)
3739 - 3742 -> 2676956 (23534796)
Rescale the custom palette from 0-128.
removed pointless sed for .desktop for DEB

we don't hard-code the path to the binaries anymore
Merge pull request #4006 from pchote/alternate-stand-animations

Alternate stand animations
Merge pull request #4008 from pchote/r8-fix

Improved R8 support.
disabled art for textfields
darker wine red for the highlighted button
replaced the yellow highlighted placeholder everywhere
Merge pull request #4011 from Mailaender/uibits

Additional polishing for UI buttons
Merge pull request #4009 from Mailaender/deb-rm-fail

cleaned up the DEB packaging script
Fix biolab ownership in East vs West 3.

Change Creeps -> Neutral to prevent units from attacking it by default.
Allow engineers to repair structures.
Merge pull request #4014 from pchote/engineer-buildings

Allow engineers to repair buildings (C&C)