Load/Save As dialog with SQL backend

[Phil Longstaff]

Bugzilla bug 562848 (http://bugzilla.gnome.org/show_bug.cgi?id=562848) and its 
duplicate 562841 (http://bugzilla.gnome.org/show_bug.cgi?id=562841) request 
that 1) the file load/save dialog be merged with the "database connection" 
dialog and 2) some method be provided to save as a new XML file (currently, 
"save as" will save as sqlite and not provide a way to specify XML).

Possible solution: provide a dialog similar in appearance to the preferences 
dialog.  on the left side is a list with entries "sqlite", "xml", "mysql" and 
"postgresql".  If sqlite or "xml" is selected, the left side is a standard Gtk 
open or save widget.  If "mysql" or "postgresql" is selected, the left side is 
the "database connection" dialog which allows the user to enter 
host/database/username/password.

Thoughts?  I'll probably implement this and add to the menus (while keeping 
the current load/save as) so people can use and provide feedback.

Phil