Remove `-mno-fused-madd` from /System/.../_sysconfigdata.py
Restore System Python’s ability to compile extensions, which has been broken on OS X 10.9 with Xcode 5.1.
System Python has a compile flag -mno-fused-madd, which is unrecognized by clang. Xcode 5.1 updates clang to a version that promotes this warning to an error, making it impossible to compile any extensions on System Python after installing Xcode 5.1.
This patches /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/_sysconfigdata.py to remove any instances of -mno-fused-madd.
Since it modifies system files, this is probably a horrible thing to do, and nobody should use it. But here it is anyway, use at your own risk.