* gendef (_sigfe): Save arguments before calling yield so they don't
	get clobbered.  Explain why.
Revert "Do not store settings in registry."

This reverts commit f405b4bd4f95026adb0069211c1d9c7d40b61772.
Revert terminal name to "cygwin"
Merge branch 'cygwin64' into msys2-64-dev