Use export NODE_USE_UV=1 python tools/test.py --libuv simple pummel To run the equivalent of "make test-uv".
This is to match how GYP does it.
Rename to regression test for GH-746 as the fd 0 behavior was not what the bug report was about.
Avoids `ls: cannot access build/debug/node_g: No such file or directory`. Not an actual error but it confuses people.
Passes `--use-http2` to node. Fixes #1430.