Log Message:
Fixes merge issues of patch-ab introduced when updated to 1.2.2.

Adding "-Wl,-readd_only_relocs -Wl,warning" for Darwin-ppc is not \ 
required anymore
because already have "-Wl,read_only_relocs,suppress".

This issue rise multiple definition of -readd_only_relocs linker flags,
and result in failed to link reported as PR#41641.