Yet Another Mach-O Unused ObjC Selector/Class/Protocol Detector. 检测ObjC无用方法、无用类、无用协议。
1.fix mistake extern class when make category; 2.support .app as path
fix used classes=(__objc_classrefs+__objc_superrefs) + (__objc_classrefs+__objc_superrefs)superclass
fix class_ro_t=objc_class.bits & FAST_DATA_MASK