Avoid costly autorelease pool drain
Optimization: access ivars directly in CDDataCursor
Optimization: access ivars directly in CDMachOFileDataCursor
Optimization: delete -[CDType init] method that does nothing useful
Return cached class when available
Optimization: access ivars directly in CDType
Optimization: access ivars directly in CDTypeLexer
Merge branch 'optimizations' of git://github.com/0xced/class-dump into 0xced-optimizations

Conflicts:
	Source/CDType.m
Merge branch '0xced-optimizations'