Make "-ccc-cxx" option work on Linux.
Patch by nobled.

I also took the opportunity to make the field private since now it is only ready from the
outside.

llvm-svn: 113138
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 8436561..a055904 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -1619,7 +1619,7 @@
       II.getInputArg().render(Args, CmdArgs);
   }
 
-  const char *GCCName = getToolChain().getDriver().CCCGenericGCCName.c_str();
+  const char *GCCName = getToolChain().getDriver().getCCCGenericGCCName().c_str();
   const char *Exec =
     Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
   C.addCommand(new Command(JA, *this, Exec, CmdArgs));