[MERGE] allow 'import bzrlib.plugins.NAME'

[John Arbash Meinel]

John Arbash Meinel has voted +1 (conditional).
Status is now: Approved
Comment:
I think we need __import__('bzrlib.plugins.%s' % (name,)) and we need to 
make sure the warning is understandable.

Otherwise, I'm happy with the change.


For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C1170433325.6059.30.camel%40localhost.localdomain%3E