RFR: JDK-8220737: Jib based 32 bit windows builds fail

[Tim Bell]

Erik:

> My recent change for gcc8.2 changed the naming convention for devkits in
> jib-profiles.js (used for builds at Oracle). This messed up the rare
> occasions when we configure for a 32bit windows target. This patch fixes
> that situation specifically for windows 32/64 where we use the same devkit.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8220737
>
> Webrev: http://cr.openjdk.java.net/~erikj/8220737/webrev.01

Looks good.

Tim