cm: Add UMTS 3G Xoom (everest) to build targets

Also update CONTRIBUTORS.mkdn for Xooms.

Change-Id: I66a417a7458bf0f37d543dce28717638a41c2f3c
diff --git a/jenkins-build-targets b/jenkins-build-targets
index b2e8892..7252732 100644
--- a/jenkins-build-targets
+++ b/jenkins-build-targets
@@ -9,6 +9,7 @@
 cm_d2vzw-userdebug
 cm_endeavoru-userdebug
 cm_epicmtd-userdebug
+cm_everest-userdebug
 cm_evita-userdebug
 cm_fascinatemtd-userdebug
 cm_galaxysmtd-userdebug