[llvm/f20] (10 commits) ...Merge branch 'master' into f20

[Adam Jackson]

Summary of changes:

  bf2cfe2... update to llvm 3.4 release (*)
  eb791e9... update to llvm 3.4 release (part 2) (*)
  283a960... add ncurses-devel buildreq (*)
  b04ba79... add ncurses-devel BR and Requires (*)
  53ecfe1... llvm: don't build lldb on powerpc (*)
  eaac0fa... bump nvr for lldb on ppc disable (*)
  78ab519... disable lldb on everything but x86_64, and i686. It hasn't  (*)
  3f23b32... backport patches from 3.5 to enable GL3.3 on radeonsi (*)
  668585c... libs: Obsoletes: OpenGTL libQtGTL (*)
  8e35e82... Merge branch 'master' into f20

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