Merge remote-tracking branch 'qatar/master'

* qatar/master:
  configure: Use check_builtin() where appropriate

Conflicts:
	configure

Merged-by: Michael Niedermayer <michaelni@gmx.at>

diff --cc configure
index 0c751b9,7525e22..2e7344c
--- 1/configure
--- 2/configure
+++ b/configure
@@@ -1041,7 -944,7 +1041,7 @@@ check_builtin()
      builtin=$3
      shift 3
      disable "$name"
--    check_code ld "$headers" "$builtin" "$@" && enable "$name"
++    check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
  }
  
  require(){