Improve the BaseDexClassLoader detail message, and make ScopedLocalRef more unique_ptr-like.

(cherry-pick of 1c459db4ea31c1f284353bc71bfd2dbc97ca53d7.)

Conflicts:

	include/ScopedLocalRef.h

Change-Id: Id01cb907406cc93f6b0f6ddaa8e7fb3714d18c53
2 files changed