some more small 64 bit changes
checking OpenGL error flag before loading any texture

GLKTextureLoader always fails if 'glGetError()' is not clean -- even though the error actually happened somewhere else. So we better remove any pending error before initiating the loading process.
moved 'setCurrentController' from internal to public 'Sparrow' class interface
raised version to 2.0.1
updated change log for v2.0.1
Merge branch 'master' of git://github.com/racarone/Sparrow-S into racarone-master
using 'dispatchEventWith:' methods for ADDED/REMOVED events
re-added SparrowClass_Internal
added some MRC API documentation to 'removeEventListenerForType:block'
Merge pull request #3 from Gamua/master

merge brach Gamua:master