Sqlite akonadi transaction mode fix

[David Goodenough <david.goodenough@btconnect.com>]

I use KdePIM and thus akonadi with SqLite.  I am running unstable and am 
up to date with fixes.

Looking in the KDE bug database I found:-

http://osdir.com/ml/kde-commits/2014-07/msg02228.html

which seems to address the repeated dialog boxes I get while filters run on
my mailboxes, and the log messages of which:-

DATABASE ERROR: 
  Error code: 6 
  DB error:  "database is deadlocked" 
  Error text: "database is deadlocked Unable to fetch row" 
  Query: "UPDATE PimItemTable SET atime = ? WHERE ( ( PimItemTable.id = ? ) )" 

is an example.  All the errors I get currently are deadlock errors.

I don't think this fix is in the current build, and I realise that Debian is 
getting ready for a new release and thus it is unlikely that this fix will be 
able to be slotted in any time soon.  Can I simply get the source, add this 
one patch and rebuild, or is it more complicated.  Also which package(s) would 
I have to rebuild?  Is it just akonadi-backend-sqlite?

David