osync v1.3-beta1 "bigbash"

It's been awhile since a new osync release, and the code should be good enough to go beta now.
Testers are welcome.

The branch 1.3 brings the following new features

• Logging of conflictual files, with email alerts
• New --initialize option in order to prepare deletion lists before actually synching anything
• OpenRC support
• Multiple portability enhancements
• Lots of smaller bugfixes (see CHANGELOG)
• Better OS detection

Under the hood improvements

• Really improved timed execution function with numerous enhancements
• Improved unit testing
• Better security for log files not being readable by other users

Bug fixes

• Summary file for deletions is now correct
• Fixed filenames ending with spaces not being synchronized correctly
• Fixed deletions on systems with ssh banners
• Fixed daemon mode under FreeBSD
• Installer fixes