Purchase/Recruit exclusions in Options.cfg file

Reads yaml list of items to exclude from Purchase/Recruit screen.
purchaseexclusions patch for language.h LocalizedText.h change

Fixed compilation error after language.h change
skin colors
Hacked hair color of orginal male personal armor sprite
partial refactor of basescape
New option in options.cfg: canTransferCraftsInAirborne
Default: OFF

Have you ever dreamed that you can transfer a craft while it is airborne? I mean when there is a base - with a free hangar - it can reach with fuel, which is closer then the original base. And this way the craft does not have to reserve much fuel, so it can use the remaining fuel for intercepting.

Now you can do this. :)
Just turn on canTransferCraftsInAirborne in options.cfg, and you can transfer that craft to ANY base it can reach with its remaining fuel.
Of course if a craft can't reach the selected destination base, it won't show up in the transfer-items-screen.
And of course transfer can only be done if the destination base have a free hangar. (not momentarily-free, completely-free!)
These type of transfers does not cost money, since the craft goes using its own fuel. :)
Crafts currently on the base are not affected, the normal rules applies to them.
Buttons' pressed state on the Graph screen is now saved to options.cfg
Changed: Graph-buttons pressed state is now saved in the Savegame instead of options.cfg.
battleRangeBasedAccuracy - test
0.7 - acc / 2.0
baseDeviation = 0.5 - accuracy / 3.0;
and stay down!
place a roof over their heads

i don't even.
option to turn off getError() for OpenGL, warnings

clang complains when you don't handle all the possible values of an enumin a
switch

Conflicts:
	src/Engine/OpenGL.h
sneaky AI -- currently psychic about visible tiles

Conflicts:
	src/Battlescape/Pathfinding.cpp
take cover better! grr!
trying to make the aliens less dumb
AI work in progress

Conflicts:
	src/Battlescape/UnitWalkBState.cpp
	src/Engine/Options.cpp
	src/OpenXcom.2010.vcxproj
new cover AI seems to be functional!

sectoids are scurrying well

Conflicts:
	src/Savegame/BattleUnit.cpp
parentheses!