Issue #20362: Honour TestCase.longMessage correctly in assertRegex.

Patch from Ilia Kurenkov.

diff --cc Misc/ACKS
Simple merge

diff --cc Misc/NEWS
index 0bb5697c3b2fd3a3f2b7aecb8f43c66f9301712d,5035e4738ef4083d88dafc9df59e0703143cfdb7..7b11b88c7794dc593ab0ed21d8c74f98ce8cfc41
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -22,6 -17,33 +22,9 @@@ Core and Builtin
  Library
  -------
  
 -- Issue #24847: Removes vcruntime140.dll dependency from Tcl/Tk.
 -
 -- Issue #23572: Fixed functools.singledispatch on classes with falsy
 -  metaclasses.  Patch by Ethan Furman.
 -
 -
 -Documentation
 --------------
 -
 -
 -What's New in Python 3.5.0 release candidate 2?
 -===============================================
 -
 -Release date: 2015-08-23
 -
 -Core and Builtins
 ------------------
 -
 -- Issue #21167: NAN operations are now handled correctly when python is
 -  compiled with ICC even if -fp-model strict is not specified.
 -
 -Library
 --------
 -
+ - Issue #20362: Honour TestCase.longMessage correctly in assertRegex.
+   Patch from Ilia Kurenkov.
+ 
  - Issue #24764: cgi.FieldStorage.read_multi() now ignores the Content-Length
    header in part headers. Patch written by Peter Landry and reviewed by Pierre
    Quentel.