Merge pull request #40 from zamatcmd/hotfix

Fix for incorrect whitespace in CMDArchiver.check_config_func()
Merge pull request #41 from zamatcmd/hotfix

Fix for threaded_rsync relative path
Intelligently joined paths with os.path.join
Merge pull request #42 from zamatcmd/5298

Intelligently joined paths with os.path.join
Merge pull request #43 from zamatcmd/hotfix

Specifying arguments to subprocess.call() correctly
Replaces pg_ctl execution using os.system() with subprocess.call()
Replaced another os.system() call with subprocess.call()
Typo
Merge pull request #44 from zamatcmd/5307

5307 - Fixes incorrect execution of pg_ctl
Fixed typo