bdiff.c: rename all variables which hold a hash value to "hash"

bdiff.c: use unsigned arithmetic for hash computation Signed integer overflow is undefined in C.

bdiff.c: cast to unsigned char when computing hash value

bdiff.c: make all local functions static

merge with stable

debugbundle: fix up long line caught by check-code

wireproto: avoid naked excepts

mq: fix typo in docstring

commands: add debugbundle command Lists ids contained in a bundle file. Useful for testing bundle-related commands.

wireproto: add known([id]) function known([Node]) -> [1/0] Returns 1/0 for each node, indicating whether it's known by the server. Needed for new discovery protocols introduced in later patches.

wireproto: fix decodelist to properly return empty list Needed by tests for next patch introducing known().

wireproto: fix handling of '*' args for HTTP and SSH

debug: add debugwireargs to test argument passing over the wire Tests argument passing locally, via HTTP, and via SSH. This is mainly preparation for the next patch.

sshserver: drop unnecessary line

merge: avoid unlinking destination of merge when case changes (issue2715)

dirstate: introduce a public case normalizing method

changegroup: minor cleanups

repair: revlog has an iterator

changegroup: fix leftover from delta read

changegroup: drop expensive redundant usage of readdelta for progress

changegroupsubset: use manifest.readfast to simplify collector

manifest: add readfast method

changegroupsubset: simplify filenode_collector

changegroupsubset: more renaming