doc: add some internal links to man pages

hgrc.5: combined short paragraphs into one Short and precise sentences are good, but we can have more than one such sentence per paragraph.

doc: use reST note directive The 'NOTE: bla bla' syntax was for asciidoc and is still present in a couple of docstrings. The docstrings will be converted to reST format when minirst knows how to handle it.

hgrc.5: capitalize True and False consistently

commands: slightly better help for --traceback

hgrc.5: document ui.traceback setting

fix tests output changed by 8269fe2d48f6

byterange: backport fix from upstream

hgweb: send proper error messages to the client Fixes a bug in protocol which caused an exception during exception handling in some cases on Windows. Also makes sure the server error message is correctly propagated to the client, instead of being thrown away.

transaction: always remove empty journal on abort When transactions without entries were aborted, the journal (of size 0) was not unlinked, which prevents subsequent operations until hg recover is run on the repository. We also make sure the journal is unlinked when committing, even if the provided hook doesn't do so.

test-bisect: fix shell-dependent output

change 'journal already exists' to 'abandoned transaction found' Journal already exists is a pretty internal piece of information, which doesn't necessarily mean much to people who are not familiar with the code. The new text is a more well-known concept.

verify: report existence of journal

bisect: no need to save the state if it wasn't changed

record: get the right position (account for skipped files)

log --limit: break after a limited number of csets (broken by f3d60543924f)

transaction: more specific exceptions, os.unlink can raise OSError

lock: catch specific exceptions

patch: use the public ctx API instead of the internals

patch: don't use mutable object as default argument

patch: initialize all attributes of the hunk class

patch: simplify logic

lock: use '==' instead of 'is' for integer equality ('is' may not work)

pychecker: remove unused local variables

remove unused imports

changelog: do not use a mutable default value

bundlerepo: keep the bundlerevlog interface in sync with revlog

localrepo/branchcache: remove lbranchmap(), convert users to use utf-8 names We don't need a "local-charset" aware branchmap() function, we can convert the names when needed during the output.

localrepo/branchcache: kill unused localrepo.branchcache The UTF-8 version of the branchcache is the master, always up-to-date, we can rename it to localrepo._branchcache.

localrepo/branchcache: rebuild the "charset-aware" branchcache when needed It's simpler and the two cache weren't always in sync otherwise: localrepo.branchcache would not be updated after calling branchmap()