Add a check for posix_spawn.

Regenerate configure and other autoconf files.

llvm-svn: 101444
diff --git a/llvm/configure b/llvm/configure
index 82aaccd..75f1c2b 100755
--- a/llvm/configure
+++ b/llvm/configure
@@ -17756,7 +17756,8 @@
 
 
 
-for ac_func in mktemp realpath sbrk setrlimit strdup
+
+for ac_func in mktemp posix_spawn realpath sbrk setrlimit strdup
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 { echo "$as_me:$LINENO: checking for $ac_func" >&5