This is a first cut at providing a tinyproxy.conf file with
more useful default or example directories. It uses datadir,
sysconfdir and localstatedir.
Because automake is a little special here, this template can
not simply be processed by configure (AC_CONFIG_FILES(...)),
as these variables can only be used like this in makefiles.
Instead, we need a little sed-processor in the Makfile in etc/.
Michael
