stop attempting to sync to current_backup, because if we do this then we do this then we don't take advantage of the hardlinking that is done later

updated the example.maildir to include this option, as well as detail the missing desid_file, destport

The modelines added match the emacs lines already present and also set
the filetype to sh (just like the emacs lines).

Previously, there were many indentation styles in use: Real tabs, 2, 3
or 4 spaces, mixing these within the same file, function or even within
a single line.

This commit changes all bash scripts in the handlers, src and lib dirs
to use consistent indentation: three spaces are now used everywhere.
Other files (e.g. Makefiles) are left untouched.

Additionally, this commit removes all trailing whitespace.

           maildirs, rather than just looking in the directories [a-zA-Z0-9], thanks
           for the patch from chris@cenolan.com (Trac#43)

ssh identity file, defaulting to the expected /root/.ssh/id_rsa. This
is important to have if you are trying to backup to a different user
on a backuphost than other handlers are using. For example, if the
rdiff handler is connecting to backalbatross@backupserver-pn using
/root/.ssh/id_rsa for public key authentication, and you want to
configure the maildir handler to connect as user
backmaildir@backupserver-pn you will might want to specify a different
identity file for that authentication (if you do not want to share the
id file between the 'backalbatross' and 'backmaildir' users). 

Note: this cannot be accomplished with a ssh config file because that
file is host based, ie. you can only specify one user per host
specified in the config

fixed bug where maildirs that start with a number were skipped. make deleted maildirs record the date they were deleted

find: warning: you have specified the -maxdepth option after a
non-option argument -type, but options are not positional (-maxdepth
affects tests specified before it as well as those specified after
it).  Please specify options before other arguments.

and md5sum locations

 Reverted indentation level to 3.

 Changed default indentation level to 8, to make it presbyopia-friendly

and maildir handler for creating safe temp files.

ignore rsync error code 24
ignore cp return code.

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