It basically removes the static init() and exit() functions,and move them inside the observer class (the one that cleans everything up when the last media is unloaded).
It also add an extra check to clean up on exit if the QuickTime? env is initialized, but no media is succesfully loaded / written (it might happens with streaming resources).
I tested it under WinXP with zero, one and multiple videos. "
Merged from svn/trunk using:
svn merge -r 9768:9769 http://www.openscenegraph.org/svn/osg/OpenSceneGraph/trunk
I removed QTtexture.h/.cpp and added QTImportExport.h/.cpp. I updated the CMake-files, I hope they are alright. I used the submitted code in my own apps since two months or so and it seems pretty stable, but as always the migration to the osg-quicktime plugin may have introduced new bugs, so perfect for developer release :)"
