Silence the "mangling of 'va_list' has changed in GCC 4.4" warning
MMS integration.

Experimental.
Added message parts to the database
Set parentId for message parts
Add message parts and then the message itself
Reversed the previous commit.

Inserting message parts first takes fewer db operations.
Added special event type for SMIL
MMSEventAttachment -> MMSAttachmentEvent
Use new MMS event types where appropriate
Export content type for QML
Removed MMSSmilEvent, added contentLocation and isLastPart QML attributes
Tweaking LastPart attribute
Serialization of the lastPart attribute
Fixed a problem with EventModelPrivate::executeQuery

It wasn't fetching message parts
Swapped two lines to minimize diffs
Changed getEventByMmsId to ignore negative group id
Made update notifications work for message parts

Now UI gets updated without having to reload the model.
Made update notifications work for message parts

Now UI gets updated without having to reload the model.