Update common superbuild to latest master

The latest common superbuild has an update to boost's build
configuration that makes it compatible with Xcode 10.2.
Status Job ID Name Coverage
  External
passed cdash

pending cmb@master-junction-osx-shared-release+superbuild
failed cmb@master-kerbin-windows-shared-release+protobuf+superbuild

pending cmb@master-kerbin-windows-shared-release+superbuild
failed cmb@master-moho-linux-shared-relwithdebinfo+python3+superbuild

pending cmb@master-moho-linux-shared-relwithdebinfo+superbuild
failed cmb@master-norkit-osx-shared-release+superbuild

pending cmb@master-praxis-windows-shared-release+superbuild
failed cmb@master-talosiv-osx-shared-release+superbuild

failed cmb@master-tatooine-osx-shared-release+superbuild

passed ghostflow-branch-check-master

pending smtk@master-junction-osx-shared-release+superbuild
pending smtk@master-kerbin-windows-shared-release+superbuild
pending smtk@master-moho-linux-shared-relwithdebinfo+python3+superbuild
pending smtk@master-moho-linux-shared-relwithdebinfo+superbuild
pending smtk@master-moho-linux-shared-relwithdebinfo+superbuild+vtk
pending smtk@master-norkit-osx-shared-release+superbuild
pending smtk@master-praxis-windows-shared-release+superbuild
passed smtk@master-talosiv-osx-shared-release+superbuild

failed smtk@master-tatooine-osx-shared-release+superbuild

failed cmb@master-kerbin-windows-shared-release+protobuf+superbuild

failed cmb@master-kerbin-windows-shared-release+protobuf+superbuild

failed cmb@master-kerbin-windows-shared-release+protobuf+superbuild

01:03:54

failed cmb@master-moho-linux-shared-relwithdebinfo+python3+superbuild

failed cmb@master-moho-linux-shared-relwithdebinfo+python3+superbuild

failed cmb@master-moho-linux-shared-relwithdebinfo+python3+superbuild

01:14:34

failed cmb@master-norkit-osx-shared-release+superbuild

01:59:10

failed cmb@master-norkit-osx-shared-release+superbuild

failed cmb@master-norkit-osx-shared-release+superbuild

failed cmb@master-talosiv-osx-shared-release+superbuild

failed cmb@master-talosiv-osx-shared-release+superbuild

00:56:29

failed cmb@master-talosiv-osx-shared-release+superbuild

failed cmb@master-tatooine-osx-shared-release+superbuild

failed cmb@master-tatooine-osx-shared-release+superbuild

failed cmb@master-tatooine-osx-shared-release+superbuild

01:19:37

passed smtk@master-talosiv-osx-shared-release+superbuild

01:04:50

passed smtk@master-talosiv-osx-shared-release+superbuild

passed smtk@master-talosiv-osx-shared-release+superbuild

failed smtk@master-tatooine-osx-shared-release+superbuild

failed smtk@master-tatooine-osx-shared-release+superbuild

00:57:51

failed smtk@master-tatooine-osx-shared-release+superbuild