Wire --version to normal -v version text.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68316 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp
index 6cb554a..a1c80a1 100644
--- a/lib/Driver/Driver.cpp
+++ b/lib/Driver/Driver.cpp
@@ -328,6 +328,11 @@
     return false;
   }
 
+  if (C.getArgs().hasArg(options::OPT__version)) {
+    PrintVersion(C);
+    return false;
+  }
+
   if (C.getArgs().hasArg(options::OPT_v) || 
       C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
     PrintVersion(C);