Move assembler out of runtime into compiler/utils.

Other directory layout bits of clean up. There is still work to separate quick
and portable in some files (e.g. argument visitor, proxy..).

Change-Id: If8fecffda8ba5c4c47a035f0c622c538c6b58351
diff --git a/compiler/dex/quick/gen_common.cc b/compiler/dex/quick/gen_common.cc
index 40db2c6..8934340 100644
--- a/compiler/dex/quick/gen_common.cc
+++ b/compiler/dex/quick/gen_common.cc
@@ -17,8 +17,8 @@
 #include "dex/compiler_ir.h"
 #include "dex/compiler_internals.h"
 #include "dex/quick/mir_to_lir-inl.h"
+#include "entrypoints/quick/quick_entrypoints.h"
 #include "mirror/array.h"
-#include "oat/runtime/oat_support_entrypoints.h"
 #include "verifier/method_verifier.h"
 
 namespace art {