Review Request: 8003693: build-infra: bridgeBuild should allow for partial build (no hotspot)

[Tim Bell]

Erik:

> Making it possible to use --with-import-hotspot through bridgeBuild 
> and jprt. Also converted check for open only to use same wildcard 
> construction as the new HOTSPOT_AVAILABLE to avoid unneeded shell 
> expressions.
>
> http://cr.openjdk.java.net/~erikj/8003693/webrev.root.01/

Looks good-

Tim