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
	_Z9Function3v @ 1 NONAME ; Function3()
	_Z9Function4v @ 2 NONAME ; Function4()
	_Z11GetDll3Datav @ 3 NONAME ; GetDll3Data()
	_Z11SetDll3Datai @ 4 NONAME ; SetDll3Data(int)