vendor_du : preserve custom dpi between builds
	modified:   config/common.mk
	new file:   prebuilt/bin/99-backup.sh

Change-Id: I26ebadd88dfce2c087f4718b644bb66889af1ef5
Updated Straight talk apns
Modified APNs for Plus.pl, Orange SK, and Vodafone AU per
CYAN-5208
BACON-1060
BACON-1089

Change-Id: Ide8982a78a4fc070724aa3904c65f18e1f705750
Merge "Updated Straight talk apns" into du44
Merge "vendor_du : preserve custom dpi between builds 	modified:   config/common.mk 	new file:   prebuilt/bin/99-backup.sh" into du44
Add KPN 4G APN

Change-Id: I45e2cbc6a98b8f1bbc509e640419f3d96641ab98
Add Ziggo Mobiel APN

Change-Id: I8299f54b25367b947e02c1bbde26b73a0d332697
Merge "Add KPN 4G APN" into du44
Merge remote-tracking branch 'du/du44' into TransparentUnicorn