f1977b4500
...and now fail conservatively when two apps both attempt to define the same permission. Apps signed with the same certificate are permitted to redefine permissions. We also finally have a (hidden) interface class for observing package installation so that we can now rev the interface without breaking existing callers. Bug 13551375 Change-Id: Ifa4e59154dcccbb286ee46a35a6f25e4ad0f0f01