Cleanup of CCTMXMapInfo:
Cleanup of CCTMXMapInfo:

* replacing ivars with auto-implemented properties where possible
* hiding accessibility of some methods
* cleanup of constructor chain
* other general cleanup

zmaruo/CocosSharp,mono/CocosSharp,MSylvia/CocosSharp,hig-ag/CocosSharp,netonjm/CocosSharp,TukekeSoft/CocosSharp,hig-ag/CocosSharp,haithemaraissia/CocosSharp,mono/CocosSharp,netonjm/CocosSharp,haithemaraissia/CocosSharp,MSylvia/CocosSharp,zmaruo/CocosSharp,TukekeSoft/CocosSharp