Make gzip output for TCP accept channels configurable per TCP accept channel and
not global. This is to make it more consistent with the reset of the configuration.
Also allows mix and matching TCP accept channels if a user desires. Default is disabled.
To enable set

gzip_output = yes
Need to remove gzip options from the command line
Add couple useful but commented out options to default config. Such as

buffer = for udp
override_hostname
gzip_output
Merge pull request #103 from vvuksan/master

Move gzip output into tcp_accept_channel and better conf file documentation