Warp/Morph: new plugin

Alpha version.
There is many things to do on interactions:
- bug with tangents
- curve manipulation/creation/remove
- keyboard shortcuts
Merge branch 'master' into dev_plugins_withterry

Conflicts:
	libraries/tuttle/SConscript
	plugins/image/process/color/HistogramKeyer/src/HistogramKeyerDefinitions.hpp
	plugins/image/process/color/Print/src/PrintDefinitions.hpp
HistogramKeyer: compil fix
Merge branch 'dev_plugins_withterry' of git://github.com/TuttleOFX/TuttleOFX into dev_plugin_warp

Conflicts:
	plugins/image/process/color/HistogramKeyer/src/HistogramKeyerDefinitions.hpp
	plugins/image/process/color/HistogramKeyer/src/HistogramKeyerProcess.tcc
	plugins/image/process/color/Print/src/PrintDefinitions.hpp
Warp plugin: update code
Merge branch 'dev_plugin_warp' into develop
Update Warp plugin code and sconscript
This code has never been merged and was relying on a two years old
version of Tuttle.
Still need some debug and clean #255.