Auto-detect Darwin (MacOS-X) and disable libintl for during build for this platform.
A bit of help tweaking.
1 The files rh62*.patch are from the Red Hat 6.2 file
2 binutils-2.13.90.0.2-2.src.rpm
4 I am trusting here that Red Hat's patches are appropriate for all CPU
5 types. If I'm wrong, just remove the offending patch...