jfltevzw: use common defconfigs from jf-common

Conflicts:
	BoardConfig.mk
jfltevzw: move loki to jf-common

Change-Id: I5a24d5bbf26c9f8916be1d6c9ecf3a8fbfa5b56a

Conflicts:
	BoardConfig.mk
	full_jfltevzw.mk
Improvements to Loki support

Add a requirement for loki_flash to flash the modified
image instead of using dd.  This gives us the added security
of verifying the Loki header during flash to double check
loki_patch.

Change-Id: Ib157c205b606a2f137b2d3e2a23f18c43c1ad437

Conflicts:
	README
jfltevzw: inherit RIL used in qcom-common

Change-Id: Iae0bf8f943bd7853586f7455ede7fb416532f2d7

Conflicts:
	system.prop