Combine manifest dict and flags dict into a single object This gets rid of the need to track two objects and might save memory. This might be faster implemented as a subclassed dict with auxiliary functions to access a sparse flags dict.

manifestflags: eliminate remaining users of direct dict access

Use strings for manifestflags to allow storing multiple flags

Start using manifestflags methods

Add manifestflags class

import: get lock and wlock one time this makes import of many patches 6x faster in kernel repo.

Adjusted documentation for hgrc's "[smtp] host" for change in 9f745d3675d4.

fix test output

mq: only add mq attribute to local repo

mq: apply patch is any posative guard matches this is like guards command from quilt package.