Patch for IMAP delimiter problem

[samit]

Because the set_rootdir method of class rcube_imap is
called (in program/include/main.inc) before connecting
to an IMAP server, the subsequent call (in set_rootdir)
to get_hierarchy_delimiter is at this point unable to
query the proper delimiter value.

The attached patch changes the connect method to call
get_hierarchy_delimiter after a connection has been
established, which appears to fix the problem. The
patch is against the 0.1-20051007 release.

I noticed that in the CVS version of rcube_imap.inc,
the connect method calls iil_C_NameSpace in an attempt
to find the delimiter. Unfortunately, this approach
doesn't seem work for me. I am using the 2002e version
of uw-imapd that comes with Debian sarge.

[roundcube]

Logged In: YES 
user_id=1262041

This was fixed with the 20051021 build.