add commands for solaris 10
fix check_link command for Solaris10.

- '-w' option of grep is not allowed.
- modify to check strictly
Merge branch 'add-commands-for-solaris10' of https://github.com/ftnk/serverspec into pat_solaris10
added pkginfo command for check_installed
added numerous override methods for solaris 10
added check_file_md5checksum for solaris 11
override check_authorized_key for solaris 10 using alternate grep
use standard grep without -w option for solaris 10 check_authorized_key
added file, group, package and user specs for solaris10
use perl instead of ls everywhere, adjust tests accordingly
Merge branch 'master' into pat_solaris10
removed solaris11 method check_file
Merge branch 'master' into pat_solaris10
Update to head of main serverspec project
Merge pull request #298 from podenski/pat_solaris10

Add Solaris 10 capability to serverspec