boost-build: Add derivation
boost: 1.55 -> 1.56
boostHeaders: regular boost package now only contains headers
libyamlcpp03: Remove old version
libyamlcpp: Correct meta information and boost
mongodb: Fix build
libedit: Update
fcgi: Update meta
exempi: 2.2.1 -> 2.2.2
boost: Update depdendent packages
ceph: 0.79 -> 0.85
Merge pull request #4085 from wkennington/master.boost

Boost Updates