Frontend: Replace -nostdinc by -nostdsysteminc (which is just system include
paths). The -nostdinc behavior is now -nostdsysteminc + -nobuiltininc.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141691 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index d92cf40..5358106 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -585,8 +585,8 @@
     Res.push_back("-fmodule-cache-path");
     Res.push_back(Opts.ModuleCachePath);
   }
-  if (!Opts.UseStandardIncludes)
-    Res.push_back("-nostdinc");
+  if (!Opts.UseStandardSystemIncludes)
+    Res.push_back("-nostdsysteminc");
   if (!Opts.UseStandardCXXIncludes)
     Res.push_back("-nostdinc++");
   if (Opts.UseLibcxx)
@@ -1394,7 +1394,7 @@
   Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
   Opts.Verbose = Args.hasArg(OPT_v);
   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
-  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
+  Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
   Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
   if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
     Opts.UseLibcxx = (strcmp(A->getValue(Args), "libc++") == 0);