Set subscription_mode in the database to a default value

If ro.telephony.default_cdma_sub is set, use that to set the
default CDMA subscription source in the database. If that is not set
use the default preferred value defined in the source code.

Change-Id: I11fff596a5fe721c64f192c889672326517dc43d
add double line for dateview
telephony: Update comments for preferred network mode

Change-Id: I1e273b3190cc8a09d18fec18c513136087a9bc19
telephony: Support for LTE/GSM mode

Add network mode LTE/GSM to preferred network type
for Metrico A-GPS test

Bug: 10139007
Change-Id: Ieebdf29c9a9c82dfd6274d6afb238ff8ad982575
Guarantee that all db related files are deleted together.

When deleting a db file, all db related files has to be deleted together
like journal, wal, shm etc.

Change-Id: I49d4581673d03fe669e9e0eaa2b50f7b9d3c34a4
Signed-off-by: jangwon.lee <jangwon.lee@lge.com>
When deleting a db file,
Context.deleteDatabase() has to be called instead of File.delete()
to guarantee all db related files
like journal, wal, shm, etc are deleted together.

Signed-off-by: jangwon.lee<jangwon.lee@lge.com>

Change-Id: I3c3d7dfa13ffbe709ab7d8a5c7cfe6cfa2864fea
revert this