Send message save dialog shortcut

[Jacob Ilsų Christensen <firelake mail1 stofanet dk>]

Hi.

When closing the compose window containing a message a dialog window comes 
up asking wether to save it or not. It has bothered me for some time that 
there were no keyboard shortcuts to select Yes/No (or is there?).
The attached patch is against current cvs and gives Yes shortcut 'Y' and 
No 'N'.

Best regards,
Jacob Ilsų.

sendmsg-save.patch