[imp] Spell check errors with apostrophe's

[Chuck Hagenbuch]

Quoting Michael Cochrane <mike@graftonhall.co.nz>:

> I just installed aspell here... and found the same problem... the
> escapeShellCmd() command adds slashes on single quotes which messes
> things up. a patch for my fix is below.

Committed, thanks.

-chuck

--
Charles Hagenbuch, <chuck@horde.org>
"After a few minutes the most aromatic and nice smelling Italian coffee 
 will come out of the exhaustpipe." - Our stove-top espresso pot