Revised GCCE workaround for Bug 2926 - must use :zip export to ensure that the various files are present before any builds are attempted, otherwise there is "no rule to make usrt3_1.lib" and no attempt is made to link any executables even after the extension makefiles are executed.

EXPORTS ?Return11111@@YAHXZ @1 NONAME
EXPORTS ?Return22222@@YAHXZ @2 NONAME