From a script by @joneric.

Fix Docker builds

switch to next version of our libc and libc++ (with floating point)

Fix GitHub issue #1591 and add test case related to the bug

 Be proper UNIX citizens in expected directory hierarchy.

Add support for Linux Mint (as an ubuntu variant) to the build scripts

Changes in order to get rid of contract warnings

Fix/add back cmake defaults

Update permission without waiting on apply block check.

Temporary/re enable floating point

multi_index refactor and additions to make interface more consistent with Boost MultiIndex

Added cmake defaults for dependency root directories

Add missing 'package' argument to make command in build script.

(unofficial) FreeBSD build support & fixups

#1542 ensure sync keeps going the best it can.

Added mongo drivers to Darwin build.

Also bring back overloads of modify and erase that take a reference to
the object.

Added softfloat dependency and interface header

This makes our multi_index interface a little more consistent with Boost
multi_index.

Added support for installing MongoDB via homebrew and compiling mongo-c-driver-1.9.3 && mongo-cxx-driver to darwin OS