prebuilt: apns-conf-cdma.xml: Fix Sprint APNs and clean up APNs for test SIM cards

- Add back and fix Sprint APN for 1x/HRPD. Corrects MMS settings and gives a
suitable APN for DcTracker to use for HRPD/EvDo.
- Remove All test SIM APNs. Since no one is running around with a test SIM and
its useless to have a bunch of APNs sharing the same MCC MNC pair.

Change-Id: I1ccbed9b3cdd456e97d205d70bf283785122de8c
Merge "prebuilt: apns-conf-cdma.xml: Fix Sprint APNs and clean up APNs for test SIM cards" into cm-10.2
vendor/cm: update CONTRIBUTORS

add Michael Limb (something15525) for Google Galaxy Nexus (toroplus)
add David Hays (flyhalf205) for Verizon HTC One (m7vzw)

Change-Id: I8fac4f71ee1c641de97eb1a43653097637924ecb
Remove CM Default Wallpaper

Change-Id: Ib484e46ad03281338c42e24c8c4fde487921b513
Add HALO to the build

Change-Id: Id7646cf6b7aee6cda14bcd5de232d8a38c6fd924
Don't build CMUpdater

Change-Id: I29ae91744fd5b2b495df9a0eb4b7a1b8cc15037c