Using hooks for b.m.o.-specific changes

[Gervase Markham]

While we are porting all of our b.m.o.-specific hacks forward to the 
3.0RC1 codebase before the upgrade, are we taking the opportunity to 
change them all to use the hooks mechanism?
http://www.bugzilla.org/docs/tip/html/cust-hooks.html

Even if the patch had to add the hook as well as use it, moving to this 
would make porting patches forward next time a lot easier, and would 
also give us some practical experience of using the extension mechanism 
we tell everyone else to use.

Also, while we are focussed on b.m.o.-specific patches, the following 
two bugs have been waiting for review and application for ages. The 
first one is particularly important; a posse of Mozilla hackers asked 
for this and another change ages ago:

"People with 'canconfirm' should be able to mark bugs as DUPLICATE and 
WORKSFORME (cantriage)"
https://bugzilla.mozilla.org/show_bug.cgi?id=314056

"Front page quicksearch uses onclick on the button instead of onsubmit 
on the form"
https://bugzilla.mozilla.org/show_bug.cgi?id=301071

Can these be folded into the process?

Gerv