Refactoring fixes

This CL contains a couple of tweaks to the
refactoring support. First, update <declare-styleable>
declarations for renamed custom views. Second, update
XML in downstream projects from library projects.
Third, allow invoking the rename refactoring from XML
files from class attributes and custom view tags as well
(until now it applied only to resource names.)
Finally, update unit test golden file format to include
whether each change is enabled, and tweak the code to
disable R class changes to handle some additional
scenarios.

Change-Id: I74ccbe1b0f15ec10429f8dda7674f51f9a6f83cd