Solaris 10: Re-work provisioning

Provisioning is now done via the root user instead of vagrant. The massive
`postinstall.sh` script has been broken down into a set of standard scripts
that each perform specific tasks. A script has been added that installs VMware
tools for Solaris.
Solaris 10: Add README

Document some notes and gotchas that arose during the development of the
Solaris 10 template.