Update libphonenumber to an unmodified copy of v7.0.1

Copied from upstream commit eb7f783d2fd7d222a10283a72d9e7 with no
local modifications and a cherry-pick of commit 5b00cb5b2dc0582c29
(JAVA/JS: Documentation fix and added missing licences.) from upstream
master.

Added Android.mk to build the code for platform and unbundled use.

Note that while we rename packages, we don't rename resources to make
sure they're found.

Change-Id: Idb886f1b5d7bca491b9f7f8d18574a88f08593ba
Temporary workaround to prevent automated jarjar renaming.

The build system adds in resources from LOCAL_JAVA_RESOURCE_DIRS
*after* the source has been jar-jared. This means jarjar will rename
references to what it thinks are resources but cannot rename the
resources themselves.

bug: 18837479

Change-Id: I2b6ef8e705c6db832ebec047f751cc51e100b1c0
Merge "Update libphonenumber to an unmodified copy of v7.0.1"
Merge "Temporary workaround to prevent automated jarjar renaming."