Add UPDATING entries and bump version.

Approved by:	so

Author: tetlowgm

UPDATING

@@ -16,6 +16,22 @@ from older versions of FreeBSD, try WITHOUT_CLANG and WITH_GCC to bootstrap to
 the tip of head, and then rebuild without this option. The bootstrap process
 from older version of current across the gcc/clang cutover is a bit fragile.
 
+20200128	p13	FreeBSD-EN-20:01.ssp
+			FreeBSD-EN-20:02.nmount
+			FreeBSD-SA-20:01.libfetch
+			FreeBSD-SA-20:02.ipsec
+			FreeBSD-SA-20:03.thrmisc
+
+        Fix imprecise ordering of SSP canary initialization [EN-20:01.ssp]
+
+        Fix nmount invalid pointer dereference [EN-20:02.nmount]
+
+        Fix libfetch buffer overflow [SA-20:01.libfetch]
+
+        Fix missing IPsec anti-replay window check [SA-20:02.ipsec]
+
+        Fix kernel stack data disclosure [SA-20:03.thrmisc]
+
 20191112	p12	FreeBSD-EN-19:19.loader
 			FreeBSD-SA-19:25.mcepsc
 

sys/conf/newvers.sh

@@ -46,7 +46,7 @@
 
 TYPE="FreeBSD"
 REVISION="12.0"
-BRANCH="RELEASE-p12"
+BRANCH="RELEASE-p13"
 if [ -n "${BRANCH_OVERRIDE}" ]; then
 	BRANCH=${BRANCH_OVERRIDE}
 fi