Update s.a.c for 4.2

Add N4, N10, N7-3G, and version numbers for 4.2.

Remove most mentions of dream, sapphire, passion.

Change-Id: Id7244ab98e06e006fc3ea7130f59183c5be44729
diff --git a/src/source/build-numbers.md b/src/source/build-numbers.md
index f1481e1..14f030a 100644
--- a/src/source/build-numbers.md
+++ b/src/source/build-numbers.md
@@ -43,6 +43,7 @@
 Ice Cream Sandwich | 4.0.1 - 4.0.2 | API level 14, NDK 7
 Ice Cream Sandwich | 4.0.3 - 4.0.4 | API level 15, NDK 8
 Jelly Bean       | 4.1.x         | API level 16
+Jelly Bean       | 4.2           | API level 17
 
 Starting with Cupcake, individual builds are identified with a short
 build code, e.g. FRF85B.
@@ -124,9 +125,11 @@
 JRO03O | android-4.1.1_r5   | Galaxy Nexus
 JRO03R | android-4.1.1_r6   | Nexus S 4G
 JRO03S | android-4.1.1_r6.1 | Nexus 7
-JZO54K | android-4.1.2_r1   | latest Jelly Bean version, Nexus S, Galaxy Nexus, Nexus 7
+JZO54K | android-4.1.2_r1   | Nexus S, Galaxy Nexus, Nexus 7
+JOP39B | android-4.2_r1     | latest Jelly Bean version, Galaxy Nexus, Nexus 7, Nexys 4, Nexus 10
 
 The branches froyo, gingerbread, ics-mr0, ics-mr1, jb-dev,
+jb-mr1-dev,
 represent development
 branches that do not exactly match configurations that were tested
 by Google. They might contain a variety of changes in addition to