Stdlib.constantize cleanup and added a TODO(fix perf).
Stdlib.constantize cleanup and added a TODO(fix perf).

jacksonic/foam,osric-the-knight/foam,osric-the-knight/foam,foam-framework/foam,jlhughes/foam,jlhughes/foam,mdittmer/foam,foam-framework/foam,mdittmer/foam,foam-framework/foam,jlhughes/foam,jacksonic/foam,mdittmer/foam,osric-the-knight/foam,jacksonic/foam,foam-framework/foam,jacksonic/foam,jlhughes/foam,osric-the-knight/foam,foam-framework/foam,mdittmer/foam