inlining SavedBattleGame::getTile()

it's the most-called method in the whole project
remove shade range check from shader
inline SavedBattleGame::getTileIndex() for getTile

for total inlining of getTile() codepath
don't malloc and free temp arrays in _zoomSurfaceY

not that this solves any major delay in that function but oh well...
optimized _zoomSurfaceY() for 2x and 4x cases

This covers the default resolution of 640x400 and the obvious next
choice of 1280x800. The new optimized functions use 64-bit integers
rather than reading pixels a byte at a time and writing them back
one byte a time. The result is an fps boost of up to x1.5. The optimized
functions also fall below TileEngine routines in CPU use according to
the callgrind profiler.
Revert "remove shade range check from shader"

This reverts commit 7f5100df39efa4bb51e9e20ffea04c65c9fd6a87.

I can't find any problems caused by the change but removing the change from the
"Standart" routine does cause problems so I can't really assume that shades
will be within the alloewed range apparently.
further work on optimized scaler routines

added 32-bit version of the functions; they're almost as good as the 64 ones!
tweaked 64-bit x4 scaler to reduce register spills, mostly unsuccessfully
Translation maintenance
Fixed TextList only accepting left-clicks.
- Fixed Geoscape music restarting too early.
- Fixed base defense crashing when defenses activated but no soldiers were available.
- Code cleanup.
- Fixed alien base notification not centering on base.
- Fixed string for melee attacks.
- Finished up Controls UI (NOTE: CONTROLS STILL NOT IMPLEMENTED, DON'T WHINE ABOUT IT)
Updated language files.
change str. name to STR_ROTATE_DOWN in EnglishUk.lng
update Polish.lng
Merge remote-tracking branch 'upstream/master'
Translation maintenance
Merge pull request #282 from MadAnd/master

Updated translation
Merge pull request #281 from radius75/Polish_t

Polish translation
Update bin/data/Language/Romanian.lng
SSE2 4X zoomer for Visual Studio intrinsics

TODO: probably needs alignment check!
TODO: 2X and GCC versions!