ttrssd (from www/tt-rss) currently runs as the user "www", and there doesn't seem to be a way to override that. This change adds an optional flag that can be specified in /etc/rc.conf to do so.

The flag is "ttrssd_run_as_user"; for example to run as the user "mmm", add the following line to /etc/rc.conf:

ttrssd_run_as_user="mmm"

If it is not specified, it defaults to "www" (reproducing the behavior from before this change).

Update ttrssd.in - allow ttrssd to run as a specified user

Part of a change to allow ttrssd to run as a specified user rather than always as ``www`` - ``chmod`` the ``update*.php`` files at install time rather than relying on the user to do it manually (in which case it would be overwritten upon reinstall or update).

This part of the change was suggested by @derekschrock in response to [my earlier PR](freebsd#304).