Bump newvers.sh and add UPDATING block.

Approved by:	so

UPDATING

@@ -16,6 +16,29 @@ 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.
 
+20190514	p10	FreeBSD-EN-19:08.tzdata
+			FreeBSD-EN-19:09.xinstall
+			FreeBSD-SA-19:03.wpa
+			FreeBSD-SA-19:04.ntp
+			FreeBSD-SA-19:05.pf
+			FreeBSD-SA-19:06.pf
+			FreeBSD-SA-19:07.mds
+
+	Import tzdata 2019a. [EN-19:08.tzdata]
+
+	Fix install with partially matching relative paths. [EN-19:09.xinstall]
+
+	Fix multiple vulnerabilities in hostapd/wpa_supplicant. [SA-19:03.wpa]
+
+	Fix authenticated denial of service in ntpd. [SA-19:04.ntp]
+
+	Fix IPv6 fragment reassembly in pf. [SA-19:05.pf]
+
+	Fix ICMP/ICMP6 packet filter bypass in pf. [SA-19:06.pf]
+
+	Add mitigations for Microarchitectural Data Sampling. [SA-19:07.mds]
+
+
 20190205	p9	FreeBSD-SA-19:01.syscall
 
 	amd64: clear callee-preserved registers on syscall exit

sys/conf/newvers.sh

@@ -44,7 +44,7 @@
 
 TYPE="FreeBSD"
 REVISION="11.2"
-BRANCH="RELEASE-p9"
+BRANCH="RELEASE-p10"
 if [ -n "${BRANCH_OVERRIDE}" ]; then
 	BRANCH=${BRANCH_OVERRIDE}
 fi