First draft of the OptionPreprocessor.

More to follow...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84352 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CompilerDriver/Main.cpp b/lib/CompilerDriver/Main.cpp
index 3e1fc9f..c581809 100644
--- a/lib/CompilerDriver/Main.cpp
+++ b/lib/CompilerDriver/Main.cpp
@@ -95,8 +95,7 @@
       (argc, argv, "LLVM Compiler Driver (Work In Progress)", true);
 
     PluginLoader Plugins;
-    Plugins.PopulateLanguageMap(langMap);
-    Plugins.PopulateCompilationGraph(graph);
+    Plugins.RunInitialization(langMap, graph);
 
     if (CheckGraph) {
       int ret = graph.Check();