rowsChanged signal handler doesn't work

[comrat]

If you try to handle 'rowsChanged' signal in ListModel corresponded handler will be not called.
Example for reproducing:
ListModel {
onRowsChanged: { log("onRowsChanged") }
}

Suggestion:
I suppose it's all because of conflict with property changed signal, I mean that 'onRowsChanged' handler is treated as handler for property 'rows' changed signal instead of 'rowsChanged' signal

[whoozle]

I've botched it in a6453b4, proper fix will be available later