ofBaseApp: remove mouseReleased(void) - the variant with x/y/button params is always called anyway, so this one was essentially unused and confusing.

fixes #2668
ofMath: remove ofAngleSumRadians. Closes #2747
Merge branch 'master' of github.com:openframeworks/openFrameworks
Merge pull request #2746 from liamstask/ofBaseApp-remove-mouseReleased-void

ofBaseApp: remove mouseReleased(void) - the variant with x/y/button para...
Changes to ofGstVideo files to compile with 0.10 gstreamer and fixup file names in Win32.
Merge pull request #2751 from ngbrown/fixGStreamerForWin

Changes to ofGstVideo files to compile with 0.10 gstreamer and fixup file names in Win32