Removed product/software tables.

Per discussion at the Linux Collaboration summit. We have decided to keep the core tables only, Any other data requirements will need to be facilitated in other databases.
Created schema file.

I wanted to have a schema file that is view-able without excel.
Added new sections.

Overall update. Added schema link, and installation instructions.
I will upload and updated file.
Added comments.
Merge remote-tracking branch 'upstream/master'
Restructured file structure