[PATCH 2/2] NEWS: News for big endian sha1 bug fix.

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+From: david@tethera.net\r
+To: notmuch@notmuchmail.org\r
+Subject: [PATCH 2/2] NEWS: News for big endian sha1 bug fix.\r
+Date: Sun, 24 Nov 2013 17:29:43 -0400\r
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+From: David Bremner <david@tethera.net>\r
+\r
+We could give more details about how to migrate tags, but I'm not sure\r
+that it's a practical problem, or just a theoretical one.\r
+---\r
+ NEWS | 14 +++++++++++++-\r
+ 1 file changed, 13 insertions(+), 1 deletion(-)\r
+\r
+diff --git a/NEWS b/NEWS\r
+index 3383ecf..31c6284 100644\r
+--- a/NEWS\r
++++ b/NEWS\r
+@@ -1,6 +1,18 @@\r
+-Notmuch 0.17~rc1 (2013-11-20)\r
++Notmuch 0.17~rc2 (2013-xx-yy)\r
+ =============================\r
+ \r
++Incompatible change in SHA1 computation\r
++---------------------------------------\r
++\r
++Previously on big endian architectures like sparc and powerpc the\r
++computation of SHA1 hashes was incorrect. This meant that messages\r
++with overlong or missing message-ids were given different computed\r
++message-ids than on more common little endian architectures like i386\r
++and amd64.  If you use notmuch on a big endian architecture, you are\r
++strongly advised to make a backup of your tags using `notmuch dump`\r
++before this upgrade. It should be possible to migrate the tags using a\r
++script.\r
++\r
+ Command-Line Interface\r
+ ----------------------\r
+ \r
+-- \r
+1.8.4.2\r
+\r