Add initial cut at CompilerInvocation::toArgs, which "serializes" the CompilerInvocation into a list of arguments which can be passed to clang-cc (eventually, clang -cc1).
 - Unfortunately, this is currently a tedious and manual translation. Eventually it would be nice to automatically generate this code.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89049 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CMakeLists.txt b/lib/Frontend/CMakeLists.txt
index 9f05919..3f0f430 100644
--- a/lib/Frontend/CMakeLists.txt
+++ b/lib/Frontend/CMakeLists.txt
@@ -7,6 +7,7 @@
   Backend.cpp
   CacheTokens.cpp
   CompilerInstance.cpp
+  CompilerInvocation.cpp
   DeclXML.cpp
   DependencyFile.cpp
   DiagChecker.cpp