Update tcsh completion scripts with new commands and for new help output. Also make the build script executable.

resolve: accepts walkopts (-I and -X)

help: better formatting in "Date Formats" section

log-like commands now use -G for --graph, -g for --git

add --git option to commands supporting --patch (log, incoming, history, tip) No short -g form, since it would conflict with -g from the graphlog extension.

i18n: add python-format comments to Japanese translation

i18n: add Japanese translation

tests: fix for test-identify returning 255

extdiff: add --change option to display single changeset diff This is the counterpart for extdiff of 9c6ae2e09e11.

identify: have consistent output for local repositories Also, add some extensive testing for it (hardly any in the suite so far).