Update Changelog for 3.0RC2

ChangeLog

@@ -1,3 +1,14 @@
+3.0RC2 -- 2015-12-08
+
+Bug #1551: --enable-profiling-locks broken
+Bug #1602: eve-log prefix field feature broken
+Bug #1614: app_proto key missing from EVE file events
+Bug #1615: disable modbus by default
+Bug #1616: TCP reassembly bug
+Bug #1617: DNS over TCP parsing issue
+Bug #1618: SMTP parsing issue
+Feature #1635: unified2 output: disable by default
+
 3.0RC1 -- 2015-11-25
 
 Bug #1150: TLS store disabled by TLS EVE logging