Add missing library dependencies.

Perhaps older CMake versions transitively linked them?
Status Job ID Name Coverage
  External
passed cdash

failed cmb@master-junction-osx-shared-release

failed cmb@master-kerbin-windows-shared-release

failed cmb@master-moho-linux-shared-relwithdebinfo

failed cmb@master-praxis-windows-shared-release

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

passed ghostflow-branch-check-master

passed ghostflow-commit-check

failed cmb@master-junction-osx-shared-release

failed cmb@master-junction-osx-shared-release

failed cmb@master-junction-osx-shared-release

failed cmb@master-junction-osx-shared-release

failed cmb@master-junction-osx-shared-release

00:11:24

failed cmb@master-kerbin-windows-shared-release

failed cmb@master-kerbin-windows-shared-release

failed cmb@master-kerbin-windows-shared-release

failed cmb@master-kerbin-windows-shared-release

00:06:03

failed cmb@master-kerbin-windows-shared-release

failed cmb@master-moho-linux-shared-relwithdebinfo

failed cmb@master-moho-linux-shared-relwithdebinfo

00:04:01

failed cmb@master-moho-linux-shared-relwithdebinfo

failed cmb@master-moho-linux-shared-relwithdebinfo

failed cmb@master-moho-linux-shared-relwithdebinfo

failed cmb@master-praxis-windows-shared-release

00:11:03

failed cmb@master-praxis-windows-shared-release

failed cmb@master-praxis-windows-shared-release

failed cmb@master-praxis-windows-shared-release

failed cmb@master-praxis-windows-shared-release

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

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

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

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

00:44:03

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