branch closing: add test for branch closing (and reopening)

branch closing: referencing open and closed branches/heads Treat fully closed branches similarly to "inactive" in the output of 'hg branches'. They will be suffixed with "(closed)" where inactive branches are marked with "(inactive)". If the -a/--active option is given both inactive and closed branches will not be shown. Partially closed branches (multiple heads, at least one not closed) will display the next (tipmost) open head. Add -a/--active option to "hg heads" which will hide closed heads iff the option is specified. In other hg commands, when multiple branch heads exist the branch name will refer to the tipmost open head, and if none exist, then the tipmost closed head.

branch closing: mark closed branches with a 'close' extra Adds a --close-branch option to commit. When --close-branch is present the commit will mark the changeset with close=1 in the changeset extras field. If a regular changeset is added on top of a closed head the branch is no longer considered closed, and thus re-opened.

store all heads of a branch in the branch cache All heads of branches will be stored in a new cache file 'branchheads.cache' within the .hg directory. The old 'branch.cache' file from older versions will be ignored. The new cache contents are formatted line-by-line as '{node} {branchtag}\n'. This is the same as the previous format. Now, every head is recorded in an oldest -> tipmost order. The localrepo.branchheads function is reworked to use the data from the cache.

i18n: make local now builds .mo files

i18n: beginnings of a Danish translation

i18n: encode output in user's local encoding This makes the translated output obey the HGENCODING environment variable or the preferred encoding as set by the LANG or LC_ALL environment variables. Python 2.4 has a lgettext method which is similar, except that it doesn't know about HGENCODING or the settings in .hgrc.

i18n: lookup .mo files in private locale/ directory This default is to look for /usr/share/locale/xx/LC_MESSAGES/hg.mo for language xx, but this code will instead do the lookup from locale/ or mercurial/locale/ relative to the root of the Mercurial source tree.

i18n: new build_mo command for setup.py This command will generate .mo files under locale/ for the .po files found under i18n/.

i18n: let Makefile generate i18n/hg.pot The target update-pot extracts strings using pygettext and updates the i18n/hg.pot file. The translators can then use msgmerge to merge the new strings in hg.pot with their xx.po file when they want to. The setup.py file now includes files under both templates/ and i18n/ as data files.