Update external/libphonenumber to v5.0

Change-Id: I6a4af4e7ac1986ba0034573795d733735f7f5ba4
Update external/libphonenumber to v5.2.

Change-Id: I59b8bb26f106ecbdbaf4efd0d33f1142736aa031
Update external/libphonenumber to v5.3

Change-Id: Ic350cdd9924d5de89c959fa42fab36a8b66484a4
Merge tag 'android-4.3_r2.1' into jellybean-mr2.1

Android 4.3 release 2.1