YUV working for gst + pixelFormat use for ofPixels
Merge branch 'feature-YUV' of /media/arturo/elements/openFrameworks into feature-YUV
ofGLUtils: fixes for gles
ofPixels: removed channels variable, all allocations based on pixelFormat
Merge branch 'develop' of github.com:openframeworks/openFrameworks into feature-YUV
Merge branch 'develop' of github.com:openframeworks/openFrameworks into feature-YUV

Conflicts:
	libs/openFrameworks/video/ofGstVideoGrabber.cpp
Merge branch 'master' into feature-YUV

Conflicts:
	libs/openFrameworks/graphics/ofPixels.cpp
	libs/openFrameworks/graphics/ofPixels.h
	libs/openFrameworks/utils/ofConstants.h
	libs/openFrameworks/video/ofGstUtils.cpp
	libs/openFrameworks/video/ofGstVideoPlayer.cpp
	libs/openFrameworksCompiled/project/linuxarmv6l/config.linuxarmv6l.default.mk
	libs/openFrameworksCompiled/project/makefileCommon/config.linux.common.mk
	libs/openFrameworksCompiled/project/makefileCommon/config.shared.mk
std::transform does not correctly handle code points outside of the ASCII range.
Poco::cat is faster than using std::string + operator.
Less code, easier maintenance.
Use the C++ std::string preferred method.
Update signal handling
- Pass user readable signal name string.
- Pass signal number as exit code w/ std::exit()
- Change global signal handler name to ofSignalHandler().
Tabs to match local code style.
migrate OS X from NSAutoreleasePool to @autoreleasepool

Offending files found via:
$ find . -type f -name '*.h' -o -name '*.cpp' -o -name '*.mm' -o -name '*.m' -exec grep -l "NSAutoreleasePool" {} \;

While it would appear as though a lot of code has changed, really it is largely due to an extra level of indentation required by @autoreleasepool. Additionally, all lines touched should be normalized to use tabs instead of spaces - I'm not a fan of tabs, but I'd rather be consistent than not.

One API change made in ofSystemAlertDialog() to migrate off a mega deprecated NSAlert API.

One file was updated that targets iOS, seemingly missed in #2888.
changed the default sendMessage method in osc sender. now sends simple message by default
merging from master
trying to merge master into develop
Merge branch 'master' of https://github.com/openframeworks/openFrameworks
Merge branch 'master' of https://github.com/openframeworks/openFrameworks
Merge branch 'master' of https://github.com/openframeworks/openFrameworks