Renamed deletable_t::get_ref to get and deletable_t::get to deletable_t::get_copy
Don't check_metainfo when we don't need it.
Made compile on CentOS 6.4, g++ 4.4.7, removing extraneous typename keywords.
adding auth metadata to vector clock conflict tracker, and fixing  command in admin cli
#1001 fixed `between` bug
Merge branch 'next' of github.com:rethinkdb/rethinkdb into next
Merge branch 'daniel_no_useless_metainfo' into next
Revert "Merge branch 'daniel_no_useless_metainfo' into next"
The merge contained un-reviewed changes. Sorry.

This reverts commit c4070d13a616dc9a1f2201e382bc0bd5c06816fd, reversing
changes made to 582992ee77ed89b7842755cb8abc8b4ee479a565.
Don't check_metainfo when we don't need it.
Merge branch 'v1.6.x' into sam_1011
Prepare for 1.6.1 release
Merge v1.6.1 into next
Merge branch 'next' into grey_issue_193
adding help printouts to export/import/dump/restore