[pypy-commit] pypy default: Document the branch

[arigo]

Author: Armin Rigo <arigo at tunes.org>
Branch: 
Changeset: r81583:e98964a22151
Date: 2016-01-05 15:00 +0100
http://bitbucket.org/pypy/pypy/changeset/e98964a22151/

Log:	Document the branch

diff --git a/pypy/doc/whatsnew-head.rst b/pypy/doc/whatsnew-head.rst
--- a/pypy/doc/whatsnew-head.rst
+++ b/pypy/doc/whatsnew-head.rst
@@ -103,3 +103,9 @@
 
 Fix the cryptic exception message when attempting to use extended slicing
 in rpython. Was issue #2211.
+
+.. branch: ec-keepalive
+
+Optimize the case where, in a new C-created thread, we keep invoking
+short-running Python callbacks.  (CFFI on CPython has a hack to achieve
+the same result.)