(iOS) Add HAVE_LAKKA and HAVE_GLUI
Add "Force-disable sRGB FBO" option for buggy Intel OpenGL drivers
on Windows - should hopefully fix messed up colors with it enabled (untested)
Add SD_FLAG_CMD_APPLY_AUTO to setting 'Force-disable sRGB FBO'
Merge pull request #1045 from lioncash/warnings

iOS: Kill off some more warnings.
iOS: Use accessors instead of direct variables