introduce script for build tagging
Preparing for release 2.2.8-130820.1550

Change-Id: I6711dcf555bdb23f434b6aaafc89a8dff6faf818
Preparing for development 2.2.8-SNAPSHOT

Change-Id: Ibfd3f0b1abdccb9d86e5d8deaac698a147deb820
fixes in the script to make it run on mac, too
Preparing for release 2.2.8-130820.1552

Change-Id: Iaddde395c9043caabb7adbd3dc71414380ed71a0
Preparing for development 2.2.8-SNAPSHOT

Change-Id: I517b924952c8f72f628ca4406be0e0a4234fd985