[Evolution] sqlite instead of mbox and Maildir

[Mohsen Pahlevanzadeh <mohsen pahlevanzadeh org>]

Dear all,(Specially evolution's programmer)

firefox uses sqlite and every work same as module programming, hard
coding and so on were became easy.....
Why you don't use sqlite?
file stat is very slowly from query...
eml needs to envelope and envelope and it's so hard, but it easy with
query.You need to lock file, but sql doesn't need to lock file.
Of course , it's needed to change your architecture and it is
time-consuming.

Yours,
Mohsen