[graphviz/f19] (9 commits) ...Merge remote-tracking branch 'origin/master' into f19

[Jaroslav Škarvada]

Summary of changes:

  950e1c4... rebuild for R3 (*)
  cef165d... fix libgvc.pc file (*)
  41757aa... lua 5.2 (*)
  7f74259... rebuild for new GD 2.1.0 (*)
  6335336... Fixed handling of the libdir/graphviz directory (*)
  a891a2c... Fixed build requires (*)
  2acfde2... Fixed ksh build require (*)
  116d655... Various man and built-in help fixes (*)
  e860ef1... Merge remote-tracking branch 'origin/master' into f19

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