update CHANGELOG

mirroring support...

conf/example.gitolite.rc
  - "slave mode" flag to disable pushes and "list of slaves"

hooks/common/post-receive.mirrorpush
  - code to push to the mirror, creating the repo if needed

src/mirror-shell
  - shell for master pushing to a slave, because we don't actually want
    to go through gitolite itself, yet we have to take care of
    $REPO_BASE being wherever.  And of course we have to set
    GL_BYPASS_UPDATE_HOOK to 1 for the push to happen!

src/gl-mirror-sync
  - manually runnable program to sync from current server to another

(really big config) 2 new rc variables

...to prevent auto-creation of repos from config, and to prevent
processing of ssh keys.  Also doc update

log message changes (warning: minor backward compat breakage)

The log message format has changed.  All log messages now have a common
prefix (timestamp, user, IP).  This is followed by $SSH_ORIGINAL_COMMAND
(or, in one special case, the name of the user's login shell).  Any
further text appears after this (currently this only happens in the case
of a successful push -- one for each ref pushed successfully)

add a new test to make sure "info" and "expand" show the right output

compile: kill spurious "user ... not in config" warnings

this happens when users are given rights to a repo via a groupname, and
GL_BIG_CONFIG is in effect

(important upgrade info here)

There has been a format change to the compiled output file.  As the
CHANGELOG says:

    Upgrading to v1.5 from any version prior to v1.5 requires an extra
    step for people who installed gitolite using the "system install /
    user setup" method described in doc/0-INSTALL.mkd.  For such
    installations, after the administrator has upgraded gitolite
    system-wide, each "gitolite host" user must run `gl-setup` once
    (without any arguments).

    This is *not* an issue if you installed using src/gl-easy-install.

the most common problems an admin will see

an admin who refuses to read messages that show up on the screen, that is ;-)