IBuildStatus changed method
Document the codebases property of the schedulers
log message removed
defered lock renamed
rename assertStdout to assertInStdout
Remove baseURL in master-side SVN source step.

repourl takes over the functions of baseURL so that everything can
be done with one url for the master-side SVN source step.

Branch considerations are removed from SVN master-side step.
Branch info should be provided with Interpolate.

(refs #2066)
use StdoutAssertionsMixin in the remaining useful places
terminate directory traversal more gently
use a template to generate buildbot.tac
remove backward-compatibility with Twisted-8.2.0
change spelling of createDb -> createDB
include basedir in path join
remove unnecessarily separate DB_HELP
move BasedirMixin to base.py
factor required-option checks into SubcommandOptions
make change:changepw the default value for --auth
reorder methods
spell function name correctly
always apply expanduser to basedir
Merge commit 'refs/pull/371/head' of github.com:buildbot/buildbot into remove-svn-baseURL