topgit-0.15

TopGit-0.15

Add support for tg push --force and using "HEAD" as a
branch name shortcut if it's a symbolic ref to a TopGit-
controlled branch.  Also make tg log try to DWIM with
its arguments.

Also some minor maintenance updates.

Kyle J. McKay (14):
      tg.sh: fix typos in comments
      Set version to 0.15
      tg.sh: do not display superfluous path info
      tg.sh: set gitcdopt if -C <dir> was used
      tg: display the correct command to restart TopGit
      tg: allow HEAD as a branch name if it's a symref
      tg: --force and -f options for push etc.
      Makefile: allow 'make doc' to make the html docs
      tg.sh: update recurse_deps_internal docs
      tg-log: attempt to DWIM with arguments
      Use $tg or $tgname everywhere
      tg.sh: remove ${...:-} silliness
      tg: add missing '[...]' to a few usage lines
      Makefile: make sure topgit.html updates when out of date