SFTP: add readlink and symlink functions
SFTP: add unit tests for symlinks
SFTP: syntax error in unit test
SFTP: fix unit test
SFTP: return $sftp object in unit tests
Merge pull request #386 from terrafrost/symlink

SFTP: add readlink and symlink functions

* terrafrost/symlink:
  SFTP: return $sftp object in unit tests
  SFTP: fix unit test
  SFTP: syntax error in unit test
  SFTP: add unit tests for symlinks
  SFTP: add readlink and symlink functions
Merge branch 'master' into php5

* master:
  SFTP: return $sftp object in unit tests
  SFTP: fix unit test
  SFTP: syntax error in unit test
  SFTP: add unit tests for symlinks
  SFTP: add readlink and symlink functions