[llvm] [clang] [flang] [flang] add fveclib flag (PR #71734)

[Tom Eccles via cfe-commits]

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@@ -111,7 +111,7 @@ int main(int argc, const char **argv) {
 
   auto Files = llvm::makeIntrusiveRefCnt<FileManager>(FileSystemOptions(), OFS);
 
-  auto Driver = std::make_unique<driver::Driver>(
+  auto Driver = std::make_unique<clang::driver::Driver>(
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tblah wrote:

The file imports both the `clang` and `llvm` namespaces. So now that I have added `llvm::driver`, `driver::Driver` is ambiguous.

https://github.com/llvm/llvm-project/pull/71734