LoongArch64 Support #72

Job	Run time
ci (tpb, ubuntu-22.04, --pb --threads --enable-libffi, test-some-fast)	31m 41s
ci (a6osx, macos-12)	19m 3s
ci (ta6osx, macos-12)	34m 4s
ci (i3le, ubuntu-22.04)	13m 5s
ci (ti3le, ubuntu-22.04)	16m 6s
ci (a6le, ubuntu-22.04)	10m 15s
ci (ta6le, ubuntu-22.04)	13m 3s
ci (ta6le, ubuntu-22.04, reboot, -m=ta6le --force, re.boot SCHEME="chezscheme", test-some-fast)	8m 39s
ci (i3nt, windows-2022, vs)	11m 50s
ci (ti3nt, windows-2022, vs)	14m 47s
ci (a6nt, windows-2022, vs)	12m 41s
ci (ta6nt, windows-2022, vs)	15m 51s
ci (ta6nt, windows-2022, gcc)	13m 20s
	3h 34m 25s

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