Merge pull request #71 from abhishek-kakkar/master

Fix GIF rendering stability issue
Merge pull request #72 from abhishek-kakkar/master

New Notepad-2 Demo
Merge pull request #30 from Tectu/master

Merge Tectu Changes
GOS module, for operating system independance
GMISC fast floating point trig
GMISC fast fixed point trig
Merge pull request #73 from inmarket/master

GOS module for OS independance, GMISC additions
More GOS module changes
GQUEUE as a seperate module
GOS changes including basic Win32 O/S support
Merge pull request #74 from inmarket/master

More GOS changes incl adding Win32 O/S support
docs
added slider enable/disable API
API fix
added obsolete #warning to gdispInit()
gdispInit() -> gfxInit() in all demos
TDISP update
doxygen fixes
added basic implementation of checkboxes (functional)
added basic implementation of checkboxes (functional)
Had extra elements to gitignore and fix image problems created by github
GOS updates
Fix license issues and GOS issues in TDISP
Notepad-2 demo updated to work on ChibiOS or pure Win32 compile