Next set of additional error checks for invalid Mach-O files for the

other load commands that use the Mach::linkedit_data_command type
but not used in llvm libObject code but used in llvm tool code.

This includes LC_FUNCTION_STARTS, LC_SEGMENT_SPLIT_INFO
and LC_DYLIB_CODE_SIGN_DRS load commands.

llvm-svn: 282441