Rename compiler_llvm CompilationUnit to LlvmCompilationUnit

Also fixed stray ART_TEST_CFLAGS to LOCAL_CFLAGS
Also fixed relative includes

Tried to change CompilationUnit to reference LlvmCompilationUnit, but
that causes issues because of the split libart-compiler
libart-compiler-llvm.

Change-Id: I7a490f339add6355a20c1cedae858ccf6967a6aa
diff --git a/src/compiler/codegen/codegen_util.cc b/src/compiler/codegen/codegen_util.cc
index 389a413..ad05b93 100644
--- a/src/compiler/codegen/codegen_util.cc
+++ b/src/compiler/codegen/codegen_util.cc
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#include "../compiler_internals.h"
+#include "compiler/compiler_internals.h"
 #include "gc_map.h"
 #include "verifier/dex_gc_map.h"
 #include "verifier/method_verifier.h"