Add -resource-dir to clang -cc1, this allows the base directory for compiler
resources (e.g., /usr/lib/clang/1.1) to be passed on the command line instead of
computed.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@91370 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/Driver/CC1Options.td b/include/clang/Driver/CC1Options.td
index 1a30a0f..a9566f3 100644
--- a/include/clang/Driver/CC1Options.td
+++ b/include/clang/Driver/CC1Options.td
@@ -223,6 +223,8 @@
   HelpText<"Load the named plugin (dynamic shared object)">;
 def plugin : Separate<"-plugin">,
   HelpText<"Use the named plugin action (use \"help\" to list available options)">;
+def resource_dir : Separate<"-resource-dir">,
+  HelpText<"The directory which holds the compiler resource files">;
 def version : Flag<"-version">,
   HelpText<"Print the compiler version">;
 def _version : Flag<"--version">, Alias<version>;