(CFACT-105) Add virtualization facts for solaris

This patch adds virtualization facts for solaris. The facts added are different
for sparc and i86 due to the different virtualization technologies used. We
utilize the regular expressions in preexisting facter libraries to ensure that
other virtualization software are not missed.
Merge pull request #125 from vrthra/fix/cfact-105/solaris-add-virtualization

(CFACT-105) Add virtualization facts for solaris
(CFACT 102) Add partition facts for solaris

This patch adds partition facts including product, size and vendor
for disks in solaris.
(CFACT 102) Add true supported filesystems for solaris

Actually lookup the kernel drivers for supported filesystems rather than
relying on the currently mounted filesystems.
Merge branch 'vrthra-fix/cfact-102/solaris-partition'

* vrthra-fix/cfact-102/solaris-partition:
  (CFACT 102) Add true supported filesystems for solaris
  (CFACT 102) Add partition facts for solaris
(CFACT-91) Add Windows external fact infrastructure.

Add some external fact support, with framework for executables.
New to Windows are batch files and Powershell scripts.