[dev] Read to POP3 without delete messages

[Chef Tony]

Christian Schoepplein ha scritto:

I modified a little the table creation script because the lenght of the 
field "uild" was 50 chars, but rfc specifies that UIDLs must be from 1 
to 70 chars

"The unique-id of a message is an arbitrary server-determined
string, consisting of one to 70 characters in the range 0x21
to 0x7E, which uniquely identifies a message within a
maildrop and which persists across sessions."

I have already modified the script on bugzilla