Build script tweaks.
Merge branch 'master' of github.com:fruux/sabre-dav
More detail when this xml body could not parse. For hhvm testing.
Removing the composer self-update to see how hhvm responds.
Even more info
This should ensure that hhvm doesn't trip over this unittest.
apc is no longer a thing in modern php versions.
Fatal error during PROPFIND on file with no Depth header.

Fixes #459
Bumped version, changelog