util: stop overwriting sha1, overwrite _fastsha1 instead Some modules (like revlog) would import util.sha1 as _sha1. This defeats the purpose of having util.sha1 overwrite itself with a faster version -- revlog would end up always calling the slow version. By always delegating to util._fastsha1 we avoid this at the cost of an extra (but unconditional) indirection.

util: remove md5 This hash function is broken and should not be used by new code. It is currently only used by keepalive.

util: remove warnings when importing md5 and sha

transaction: refactor transaction.abort and rollback to use the same code This adds a change to the way that abort is processed, as it will not continue truncating files beyond the first failure, otherwise the respective functionality is maintained, i.e. abort will not unlink files, but rollback will. Co-contributor: Sune Foldager <cryo@cyanite.org>

test: change repair strip test to illustrate manifest errors

verify: reference the correct linkrev when a filelog is missing when a filelog is missing, the first bad revision is the first revision where the filelog is referenced, not 0.

verify: avoid exception on missing file revlog Previously, accessing the filelinkrevs of a specific file that happens to have already been unlinked from the filesystem, e.g. due to a partial rollback having occurred, will trigger a KeyError being raised. Co-contributor: Sune Foldager <cryo@cyanite.org>

transaction: reset transaction on abort Prevent the use of the transaction after it has been aborted. Co-contributor: Sune Foldager <cryo@cyanite.org>

transaction: ensure finished transactions are not reused All transactional methods on the transaction class have had a decorator added that ensures the transaction is running. Co-contributor: Sune Foldager <cryo@cyanite.org>

mq: simpler check of first character of guard name