Header library to remove dependence on runtime/

Add a new header library to remove libdexfile and others' dependence on
runtime (typically runtime/base) includes in libdexfile.  Also a small step
to tease dexlayout and profman away from relying on these as well.

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

Change-Id: I38e2fe399a75f4bc6318c77a71954c00ea73ec2b
diff --git a/patchoat/patchoat_test.cc b/patchoat/patchoat_test.cc
index ac3abd0..974ed32 100644
--- a/patchoat/patchoat_test.cc
+++ b/patchoat/patchoat_test.cc
@@ -24,8 +24,8 @@
 #include "android-base/stringprintf.h"
 #include "android-base/strings.h"
 
+#include "base/leb128.h"
 #include "dexopt_test.h"
-#include "leb128.h"
 #include "runtime.h"
 
 #include <gtest/gtest.h>