store: don't create dirs ending in period or space for hashed paths (
issue1417)
Windows won't create directories with names ending in period or space, so
we replace the last period/space character in truncated directory names of
hashed paths with some other character (underbar).
Fix test-acl failure on AIX due to read only LOGNAME.
On AIX /etc/profile sets LOGNAME read only. This causes test-acl to
fail when it comes to set LOGNAME in do_push().
Work around this by using env to set LOGNAME and run the command.
Revise Bugzilla module comments into extension help.
Revise the comments detailing module usage at the start of the Bugzilla
extension into extension help text.
Expand the detail given on extension settings, in an attempt to permit
the user to configure successfully without having to study the extension
code. Show a sample configuration as well.