[Evolution] A bug and a workaround for Evo not providing an "open" option for attachments

[Mark Stosberg <mark summersault com>]

I'm using Evo 2.8.0. I got a "WAV" attachment, and there was no option
to open it directly, like Thunderbird offered. 

This is due to a bug in this version of Evo, which does not follow the
MIME standard that mime-types should be case-insensitive. The attachment
I got had a MIME type of "audio/x-WAV". Evo should have recognized that
this was the same as "audio/x-wav", but it did not. 

( For reference:
  http://www.faqs.org/rfcs/rfc2045.html
  "Matching of media type and subtype is ALWAYS case-insensitive" )

The workaround, at least on Mandriva Linux 2007, was to edit

/usr/share/applications/defaults.list

I found that line that said:

audio/x-wav=totem.desktop

I added another line below it: 

audio/x-WAV=totem.desktop

Then (after perhaps a restart of Evo), it offered me the option to open
the wav file with Totem, as I wanted. 

   Mark