zsh completion: add new options for existing commands...
zsh completion: add new options for existing commands
* backout: add --tool;
* bisect: add --extend;
* bookmarks: add --inactive;
* branches: add --closed;
* bundle: add --rev, --all, --branch;
* cat: add --decode;
* clone: add --updaterev, --branch, --pull and use common-with-qclone opts;
* commit: add --close-branch;
* diff: add --change, --reverse, --stat, --text, --unified;
* export: add --rev;
* grep: add --date;
* heads: add --topo, --closed;
* help: add --extension, --command, --keywords; complete additional help
topics also, not commands only;
* identify: add --bookmark and remote_opts;
* import: add --no-commit, --exact, --import-branch, --date, --user,
--similarity and commit options;
* log: add --user, --date, --stat, --git, --graph;
* manifest: add --rev;
* push: add --new-branch;
* resolve: add --all, --no-status, --tool and pattern options;
* revert: add --date;
* serve: add --prefix, --web-conf, --pid-file, --cmdserver, --certificate;
* status: add --change;
* tag: add --force, --edit, --remove;
* tip: add --git;
* update: add --check, --date.
