Make CodeGen depend on ASTMatchers

- Shared library builds are broken due to the missing dependency.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@364428 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CMakeLists.txt

@@ -101,6 +101,7 @@ add_clang_library(clangCodeGen
   LINK_LIBS
   clangAnalysis
   clangAST
+  clangASTMatchers
   clangBasic
   clangFrontend
   clangLex