Project: when using XML tags, the text inside tags has to be escaped
update SequenceParsing
Project::unescapeXML: forgot the ';'
Project: missing include
PluginMemory: really fix the assert
@MrKepzie
update openfx
OfxOverlayInteract: protect from OpenGL context modifications during the interact actions
- currently only saves attires and 2D texture binding, but maybe other things must be saved too
Properly implement the OpenGL saving/restoring function so the Engine
doesn’t have to link with OpenGL.
Fix alpha index in getImage
Merge branch 'workshop' of github.com:MrKepzie/Natron into workshop
OSX packaging script
update OSX doc
update openfx & sequence parsing
packageOSX.sh: was too verbose
Viewer: Opaque images are displayed disregarding the alpha channel.

ConvertToFormat: RGB—>RGBA set alpha to 0. to match what Nuke does.
Merge branch 'workshop' of https://github.com/MrKepzie/Natron into workshop
ProjectPaths: never end with trailing separator
File dialog: when a relative variable is selected, make all paths
selected in the line-edit be displayed relative to that path.
Also path will be simplified when editing line-edits by hand directly
(or copy/paste)
Autoconnect: bug fix
OfxEffectInstance: fix potential bug
host.scons add missing