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/gen_common.cc b/src/compiler/codegen/gen_common.cc
index acaad5b..1d64a71 100644
--- a/src/compiler/codegen/gen_common.cc
+++ b/src/compiler/codegen/gen_common.cc
@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-#include "oat/runtime/oat_support_entrypoints.h"
-#include "../compiler_ir.h"
-#include "ralloc_util.h"
 #include "codegen_util.h"
+#include "compiler/compiler_ir.h"
+#include "oat/runtime/oat_support_entrypoints.h"
+#include "ralloc_util.h"
 
 namespace art {