Fix: Wx tests were failing when running in series.
Issue #506: Import warnings module if sys.warnoptions is set when starting frozen app.
Issue #443: Move default bootloader icons to path inside PyInstaller package.
Issue #443: Implement argument --icon for OSX.
Issue #725: Add gst hook and test case.
Issue #433: Do not mention in manual that --icon option does not work on OSX.
Merge pull request #63 from matysek/develop

Implement --icon for OSX, add gst hook, fix option --Wignore.