building on WSL

[Jonathan Gibbons]

This is a question for those folk that have been working on, and more 
importantly, using, the recently-support for WSL.

I'm coming up to speed up actually using WSL myself, so that I can test 
the various new stuff going into jtreg.

What is the typical way to build OpenJDK for Windows, with WSL? e.g. 
what commands, and do you get Windows binaries?

Although there is support going into the build for running jtreg, if one 
were to run jtreg directly, what would the typical/expected command be 
... would it be to run the jtreg launch script in a WSL/bash window, 
pointing at a Windows JDK ... or something else?

-- Jon