clean code for CFString usage
issue #64
using GL and not AGL for OpenGL on Mac
issue #64
clean FFMpeg build with major version < 52
issue #64
change kernel size to 8 of convolve operation
issue #64
update default config for MacOSX
issue #64
Merge branch 'master' into dev_macosxbuild
Adding numpy as library dependency in the pyTuttle envrironment.
Remove auto_ptr.h include, it doesn't exist on osx gcc compiler 4.2
submodule SConsproject with numpy support.
Adding macports scons configuration file example.
issue #64
Merge branch 'develop' of github.com:tuttleofx/TuttleOFX into dev_macosxbuild

Conflicts:
	libraries/tuttle/SConscript
Add CoreFoundation dependency on tuttle common libs.
issue #64
Update macos_ports.sconf for supporting corefoundation.
issue #64
Fixing warning comparaison between signed and unsigned int expressions
Removing remaining comments from last merge
Add Histogram and ColorCube plugins
Update sconsProject
Addition of the bold, italic and background option in the Text plugins.
Bold and Italic fonction are modified / Utilisation of FontConfig
Add comment for the help menu.