Linker: If the type is pie the results should be an executable which entry point...

Linker: If the type is pie the results should be an executable which entry point should be an executable entry point, not a DLL one.

	* emultempl/pe.em (set_entry_point): Only use the DLL entry point
	for DLLs.
	* emultempl/pep.em (set_entry_point): Likewise.