[PATCH] Remove ordinals from Input Graph elements.

[kledzik at apple.com]

  The mach-o linker acts as if all object file arguments were moved to the front of the arg list and all library arguments where moved to the end.  Once all object files are processed, all libraries are repeatedly searched until no more undefines are satisfied.

  This grouping of libraries at the end could be done by the mach-o driver.

http://llvm-reviews.chandlerc.com/D3270