Merge branch 'master' of github.com:unbit/uwsgi
added support for O_TMPFILE
some garbage...
added FreeBSD jail support
improved support for FreeBSD jails
do not call pre-jail on reload
added --jail-attach
remount to private subtree after unshare

systemd will makes the VFS tree 'shared' on boot, so mount
operations would propagate between the namespace and the
parent system.
make sure the whole VFS tree is private to the namespace.
Merge pull request #374 from gdamjan/master

remount to private subtree after unshare
prepare for advanced hooks
first public implementation of the advanced hook subsystem
added callint/callret hooks
added log encoders
added msgpack plugin, it misses int and float support
improved float/double support
added date/time support to msgpack encoder
added response routes
fixed msgpack on 32bit
hardcode support for MS_REC
support for platform non defining MS_PRIVATE