Make (load-shared-object #f) portable #70

Job	Run time
ci (tpb, ubuntu-22.04, --pb --threads --enable-libffi, test-some-fast)	31m 48s
ci (a6osx, macos-12)	19m 4s
ci (ta6osx, macos-12)	20m 24s
ci (i3le, ubuntu-22.04)	12m 53s
ci (ti3le, ubuntu-22.04)	15m 53s
ci (a6le, ubuntu-22.04)	10m 10s
ci (ta6le, ubuntu-22.04)	18m 25s
ci (ta6le, ubuntu-22.04, reboot, -m=ta6le --force, re.boot SCHEME="chezscheme", test-some-fast)	8m 28s
ci (i3nt, windows-2022, vs)	11m 44s
ci (ti3nt, windows-2022, vs)	14m 35s
ci (a6nt, windows-2022, vs)	20m 36s
ci (ta6nt, windows-2022, vs)	22m 53s
ci (ta6nt, windows-2022, gcc)	13m 24s
	3h 40m 17s

Provide feedback