[mingw-gcc/f18] (7 commits) ...Backported imported fix regarding virtual thunks

[Erik van Pienbroek]

Summary of changes:

  464a4b4... rebuild for new ppl / cloog (*)
  a731784... Made this package compatible with RHEL6 and RHEL7 (*)
  40f711f... Build with --disable-ppl-version-check (fixes FTBFS against (*)
  a4d7b38... Temporary build without libgomp support (PPL update breakag (*)
  521ee27... Re-enable libgomp support (*)
  9038b2e... Typo (*)
  e706930... Backported imported fix regarding virtual thunks (*)

(*) This commit already existed in another branch; no separate mail sent