RFR 8185130: jlink should throw error if target image and current JDK versions don't match

[Alan Bateman]

On 05/12/2017 14:42, Sundararajan Athijegannathan wrote:
> Updated to check minor version as well -> 
> http://cr.openjdk.java.net/~sundar/8185130/webrev.01/index.html
I think this looks okay. I assume the java9.home in the test is for 
manual test.

-Alan.