Git ignore *.output files.
First attempt at supporting MySQL - will prompt the user for a lot of input,
and will cause too many updates. Next is optimizing the number of updates
and automating the typical answers during MySQL setup.
Common header with best practices
Added support to include / execute files / scripts once. Modified the
master module and the modules library to make use of the capability.

This is now improved performance because apt-get update is performed once.
apt-get install for the same packages is also done also once. Finally all
files are included at most once.