[libFuzzer] extend the -fork=1 functionality. Still not fully usable, but good enough for the first unit test

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk/lib/fuzzer@353775 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/FuzzerIOWindows.cpp b/FuzzerIOWindows.cpp
index e45c137..bb33343 100644
--- a/FuzzerIOWindows.cpp
+++ b/FuzzerIOWindows.cpp
@@ -336,6 +336,14 @@
   _write(2, Str, strlen(Str));
 }
 
+void MkDir(const std::string &Path) {
+  Printf("MkDir: unimplemented\n");
+}
+
+void RmDir(const std::string &Path) {
+  Printf("RmDir: unimplemented\n");
+}
+
 }  // namespace fuzzer
 
 #endif // LIBFUZZER_WINDOWS