build: Disable Tamil locale

With only 3% approved in CM project and 1% on AOSP project
in the past 5 months, this is a no-go

Change-Id: I0c9d31d5737a2191e9a425b9de98ca659071ad7d
build: Store the jenkins build number in misc_info

If the jenkins build number is available, list it as build_number in
the misc_info.txt file.

Change-Id: I6500c6b53661f2904dff738d25d8a8d24a7dca80