Bug#895452: libquadmath and quadmath.h do not exist on ppc64

I will test gcc-8-20180415 and see what results I get.

Bug#895452: libquadmath and quadmath.h do not exist on ppc64

New GCC bigid is being flipped around by Jakub Jelinek ( Red Hat ) who claims this issue is fixed for ppc64 in GCC version 8 that does not exist anywhere. Not even in the git repo. I am trying to figure out what is going on here. see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82686 see