doc: add description about location of management files for subrepo

doc: add description about re-opening closed heads to 'Head, closed branch' in glossary

doc: fix careless document miss for term 'Close changeset' in glossary there is no term 'Changeset, close' in glossary. 'Close changeset' seems to have to be linked not to 'Branch, closed', but to 'Head, closed branch', because only the latter explains about "the changeset that marks a head as no longer interesting".

doc: fix careless document miss in help of hgext/notify according to configuration example below, and direction of changeset transference, this paragraph should describe about "changegroup" hook. [hooks] # one email for each incoming changeset incoming.notify = python:hgext.notify.hook # one email for all incoming changesets changegroup.notify = python:hgext.notify.hook # one email for all outgoing changesets outgoing.notify = python:hgext.notify.hook

doc: fix explanation comment in acl extension according to configuration in "acl.deny" below, group "@hg-denied" also be denied for all files, so add such description to comment for configuration. [acl.deny] # user6 will not have write access to any file: ** = user6 # Group "hg-denied" will not have write access to any file: ** = @hg-denied

tests: test test-filelog is python - rename to test-filelog.py

tests: avoid tab indent on all kinds of lines of sh commands