Backport r185150 to google-4_7 and google-4_8(save --std flag as cl_args)

[Dehao Chen]

Bootstrapped and passed regression tests.

Okay for google-4_7 and google-4_7 branches?

Thanks,
Dehao

2012-03-09   Rong Xu  <xur@google.com>

        * opts-global.c (lipo_save_cl_args): save -std option.
        Google ref b/6117980.

Index: gcc/opts-global.c
===================================================================
--- gcc/opts-global.c (revision 198164)
+++ gcc/opts-global.c (working copy)
@@ -277,7 +277,7 @@ lipo_save_cl_args (struct cl_decoded_option *decod
   */
   if (opt[0] == '-'
       && (opt[1] == 'f' || opt[1] == 'm' || opt[1] == 'W' || opt[1] == 'O'
-  || (strstr (opt, "--param") == opt))
+  || (strstr (opt, "--param") == opt) || (strstr (opt, "-std=")))
       && !strstr(opt, "-frandom-seed")
       && !strstr(opt, "-fripa-disallow-opt-mismatch")
       && !strstr(opt, "-Wripa-opt-mismatch"))