8087202: Add support for PATCH field and remove unused fields of new version string
Reviewed-by: dholmes, alanb
os_family = aix
arch = ppc
arch_model = ppc_64
os_arch = aix_ppc
os_arch_model = aix_ppc_64
lib_arch = ppc64
compiler = xlc
gnu_dis_arch = ppc64
sysdefs = -DAIX -DPPC64