Important packaging changes.

1. Update to 0.5.0!
2. We're moving build back down to 0.7.2 for Xpand, etc.. because of performance issues with XPand 0.8.0 == up to 40x slowdown.
3. We're forcing use of 0.7.x for AMf for same reasons.
4. Rebuilt all xtext stuff for xtext 0.7.2.
6 files changed