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

[Dennis Clarke <dclarke@blastwave.org>]

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 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85440

What a mess .. seems like a new secret gcc codebase exists somewhere
and no one can see it.

Dennis