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.

... and populate it with autotools/build files.
This is of course intended to make life easier for people using git-svn.

Signed-off-by: intrigeri <intrigeri@boum.org>

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

dup: added option --force to cleanup and remove-older-than commands, else they actually do not do anything

lib/tools.in(maketemp): really remove insecure fall-back if mktemp is missing, since it is now required at build-time

sys: fix catifexec invocations with arguments to prevent "line 191: [: too many arguments" error messages

sys: fixed debconf-get-selections search in VServers, especially in case it is not available on the host

added more robust mdadm raid device capture, by actually scanning active arrays via mdadm, rather than just catting the mdadm.conf file, which may be empty

fixed catifexec function to actually work, also now takes arguments that are passed, thanks to a report from John Hallam

add the ability to save the debconf package selection states in the sys handler, which aides in restoring installed packages with the right choices made

made mktemp a requirement for building backupninja, added autotools variables to substitute the proper binary location and removed bad fall-back when mktemp was not there

sys: support selection of VServers to run on with the new vsnames configuration option (Closes: Trac#45)

lib/vserver: added vservers_running function, use it in sys handler (to ease future fix for Trac#45)