Added a function to clear accounts for a specified package.
Added a function to clear accounts for a specified package.

Right now, clearAcounts() only clears the accounts
for the calling package. This new function will allow a class like
PhoneAccoutBroadcastReceiver to clear accounts for any package.

Bug: 17689845
Change-Id: I24db104268535e7e0e33e093e8fab63765df0b08

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base