Update Java buildpack dependencies to latest

This is an update to the buildpack cache.

See https://www.pivotaltracker.com/story/show/58814120 for more
information.
Resolve conflicts
Merge branch 'glyn-master'
Upgrade login and saml_login to 1.2.7.

The 1.2.7 release re-introduces the account registration links for saml_login.
Updated bosh packaging for new login and saml_login packages.
Merge pull request #202 from rmorgan/master

Upgrade login and saml_login to 1.2.7.