SSH2: fix E_DEPRECATED on PHP5.5
Added test for Net_SSH2::_format_log()
Fixed typo and fixed bug with destructor being called in test on ssh object
Merge pull request #213 from mpscholten/test-for-ssh2-format-log

Added test for Net_SSH2::_format_log()

* mpscholten/test-for-ssh2-format-log:
  Fixed typo and fixed bug with destructor being called in test on ssh object
  Added test for Net_SSH2::_format_log()
Merge pull request #215 from terrafrost/preg-replace-callback

SSH2: fix E_DEPRECATED on PHP5.5

* terrafrost/preg-replace-callback:
  SSH2: fix E_DEPRECATED on PHP5.5