[Box-Admins] Build.squeak.org and apache configuration

[Ken Causey]

Since no one else piped up, for now I've setup build.squeak.org to point 
to Jenkins.  We can always add something else or change this easily 
enough.  I left squeakci.org as an alias.  Of course if that domain name 
is allowed to expire we should remember to remove that.

Since our servers tend to host a number of services under various 
hostnames we have found it useful to utilize the sites-available and 
sites-enabled directories under /etc/apache2 and avoid modifying the 
apache2.conf.  The idea is to create a file in sites-available with the 
information necessary for a specific website.  Then to actually make it 
work create a symlink in sites-enabled which points to the file in 
sites-available.  Run sudo apache2ctl configtest to be sure that no 
mistake was made, then run sudo apache2ctl graceful to have apache 
reload it's configuration files and make the changes take effect. 
Something similar can be done with mods-available and mods-enabled once 
we find the need.  One of the benefits of this system is that if there 
is a problem and one of the config files is suspected then you can 
temporarily remove it from the configuration by simply deleted the 
symlink and having apache reload the config.  The configuration text 
remains and you can simply relink it when ready (and have apache reload 
again).

I went ahead and modified the config on box3 and setup such a file for 
build.squeak.org.

Ken