fix boost for ndk r9c
added time stamp to frame class
fixed frame bit per pixel in nv21 frame source
fixed frame bit per pixel in rgb frame source
fixed cmake for android script exclude executable output
changed application.mk to toolchain 4.6
added image drawer interface
refactored frame into image
fixed time counter
added image drawer interface
fixed merge conflicts
added one writer multiple reader feature

Merge branch 'master' of github.com:Ingener74/HeartRateMonitor into bugFix_OneWriterMultipleReaders

Conflicts:
	modules/libheartbeatrate/src/NV21FrameSource.cpp