Version 5.3

- Adjusting end-of-line comments improved.
- Bugfix: Map and menu entry 'Snippets->edit global templates'.
- 'Run -> make script executable' (\re) is now a toggle.
- Perl interpreter can be set in ~/.vimrc.
- Script can be run via shebang (new global variable g:Perl_DirectRun)
- Fixed problem with system-wide installations and plug-in managers (thanks to Yegor).
- Added 'Perl_SetMapLeader' and 'Perl_ResetMapLeader'.
- Bugfix: Resetting maplocalleader in filetype plug-in after setting it to the value of
  g:Perl_MapLeader.
- Bugfix: Better compatibility with custom mappings
  (use "normal!" and "noremap" consistently).