Move most of runtime/base to libartbase/base

Enforce the layering that code in runtime/base should not depend on
runtime by separating it into libartbase.  Some of the code in
runtime/base depends on the Runtime class, so it cannot be moved yet.
Also, some of the tests depend on CommonRuntimeTest, which itself needs
to be factored (in a subsequent CL).

Bug: 22322814
Test: make -j 50 checkbuild
      make -j 50 test-art-host

Change-Id: I8b096c1e2542f829eb456b4b057c71421b77d7e2
diff --git a/runtime/native/dalvik_system_DexFile.cc b/runtime/native/dalvik_system_DexFile.cc
index 5d18b6e..13319c4 100644
--- a/runtime/native/dalvik_system_DexFile.cc
+++ b/runtime/native/dalvik_system_DexFile.cc
@@ -22,7 +22,9 @@
 
 #include "base/file_utils.h"
 #include "base/logging.h"
+#include "base/os.h"
 #include "base/stl_util.h"
+#include "base/utils.h"
 #include "class_linker.h"
 #include <class_loader_context.h>
 #include "common_throws.h"
@@ -43,10 +45,8 @@
 #include "oat_file.h"
 #include "oat_file_assistant.h"
 #include "oat_file_manager.h"
-#include "os.h"
 #include "runtime.h"
 #include "scoped_thread_state_change-inl.h"
-#include "utils.h"
 #include "well_known_classes.h"
 #include "zip_archive.h"