Set thread affinity on Windows XP so that each encoder thread

is tied to a single CPU.  There is some suggestion on the web
that Windows 7 does this better, which may explain the slowdowns
and erratic timings that we see post-2.6.3 on Windows XP (see #771).

1 files changed, 4 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 3bb168cfa..2f3ab4c25 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2016-03-05  Carl Hetherington  <cth@carlh.net>
+
+	* Try to fix slowdowns on Windows XP (#771).
+
 2016-03-02  Carl Hetherington  <cth@carlh.net>
 
 	* Version 2.6.31 released.