RFR: JDK-8216278: Fix devkit and basic Jib support on WSL

[Tim Bell]

Erik:

Looks good to me.

/Tim

On 01/09/19 10:14, Erik Joelsson wrote:
> The WSL support in the build does not currently work with devkits. This
> prevents us from using Jib to configure a WSL build. This patch fixes
> configure to work with devkits when building for Windows in WSL.
>
> (For Oracle users, I also managed to get Jib working in WSL, and able to
> configure both Windows and Linux profiles. Note that since Jib is not
> WSL aware itself, you need to manually direct the data dir to a location
> visible from Windows. e.g --with-data-dir
> /mnt/c/cygwin64/var/tmp/jib-$USER).
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8216278
>
> Webrev: http://cr.openjdk.java.net/~erikj/8216278/webrev.01/index.html
>
> /Erik
>