Revert "Merge branch 'cmake_contrib_refactor' into develop"

This reverts commit c5de3e8b85377dcf84fc2dc181972a2b2f717dbf, reversing
changes made to 23dbc087fcafed63aa43466bd2ba548f407a5f24.
Don't try to find math library at all on non-unix systems.
Fixed "Revert "Merge branch 'cmake_contrib_refactor' into develop""

This reverts commit cbea8ee83e8515add0a46420bb7625c543369f80.
Merge branch 'cmake_contrib_refactor' into develop