This directory - the client/local/ directory - can be used to
install Xymon client add-on scripts. The Xymon client will run
all files in this directory that are executable, and include the
output from each script in a separate section in the Xymon client
message (the "clientlog") which is sent to the Xymon server.

This is the supported, upgrade-safe way to add custom data to the
clientlog: you never need to edit the shipped xymonclient-*.sh
scripts, so your additions survive a client upgrade.

Each script's standard output is added under a section named after
the script's filename, like this:

    [local:myscript]
    ...output of client/local/myscript...

Because the script's output is included verbatim, a script may also
print its own "[section]" header lines; each becomes a separate
section in the clientlog on the server. So a single drop-in can emit
one or more sections of its choosing. Anything the script writes to
stderr is NOT included in the message, and if one script fails the
others still run.

This output will have to be processed on the Xymon server; there
is no default processing done by Xymon on the output from these
scripts. They are merely added to the client data.

If you want to install an add-on script that directly generates a
status column in Xymon, this should go in the client/ext/ directory
instead.
