RFR: JDK-8069540: Remove universal binaries support from hotspot build

[Tim Bell]

Erik:

> The hotspot native libraries on macosx are currently being packaged as
> "universal binaries" (while all other libraries and executables are
> not). There seems to be no point in doing so since we only build for one
> architecture anyway. I believe this is just something that was never
> cleaned up a long time ago and has just been around since. In the new
> hotspot build, we duplicated the behavior with the intention of removing
> it later. That time has now come.
>
> I have verified that a hotspot job for macosx still works.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8069540
>
> Webrev: http://cr.openjdk.java.net/~erikj/8069540/webrev.01/

Looks good to me.

/Tim