Update SmartOS installation procedure

* Make use of 2013Q2 package set from Joyent : this would require
a recent image of SmartOS
* NO compat with previous 2013Q1 and before
Merge pull request #237 from s0undt3ch/develop

Drop support for EOL distributions
Merge pull request #238 from s0undt3ch/develop

Drop support for EOL distributions or Non supported distro versions
Merge pull request #239 from virtua-network/fix_smartos

Issue #224 : update SmartOS installation procedure
Updated changes log.