[Bug bootstrap/50139] in-tree GMP/PPL/CLooG is misconfigured

[nightstrike at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50139

--- Comment #3 from nightstrike <nightstrike at gmail dot com> ---
Both cloog and ppl have been removed from GCC in favor of just isl.

GCC 4.8 removes ppl in 2012:
https://gcc.gnu.org/ml/gcc-patches/2012-06/msg01470.html

GCC 5.0 removes cloog:
https://gcc.gnu.org/ml/gcc-patches/2014-11/msg01167.html

There's other relevant posts, but you get the idea.  Anyway, this should
eventually be closed.