Fix braindamaged import in mdiff.

Remove some debugging code from lazyparser

Remove python version of the patches code

Remove debugoldmerge command

hg history: don't print file list without -v switch

Subdir support for annotate

Use revlog.delta and mdiff.patchtext to massively speed up processing of manifests. This lets us verify a 28k changeset kernel repo in under two minutes.

Add a function to return the new text from a binary diff

Add code to retrieve or construct a revlog delta

Add fileopener to move some pathname knowledge from filelog to repository

Make revision code slightly faster

Only use lazy indexing for big indices and avoid the overhead of the lazy index in the small index case.

Make lazyindex load slightly faster

Simplify checkout slightly, replace checkdir with os.makedirs

Sort files on check-in for good I/O patterns

Make compression more intelligent: - we don't attempt to compress things under 44 bytes (empirical) - we check whether larger objects actually compress - we tag objects to indicate their compression NUL means uncompressed and starts with NUL x means gzipped and starts with x (handy) u means uncompressed, drop the u