Label positioning fixes for iOS
Label positioning fixes for iOS

1.  iOS uses CCBMFontConfiguration.CCBMGlyphDef.YOffset -- it was 0 for
my test cases with Android
2.  Updated one internal variable name for readibility
3.  Removed a big block of commented out code
4.  Explicitly call CreateFontChars() so that calculations are available
after the constructor

TukekeSoft/CocosSharp,zmaruo/CocosSharp,mono/CocosSharp,MSylvia/CocosSharp,MSylvia/CocosSharp,haithemaraissia/CocosSharp,zmaruo/CocosSharp,TukekeSoft/CocosSharp,mono/CocosSharp,haithemaraissia/CocosSharp