RFR: Update java/nio/charset/Charset/NIOCharsetAvailabilityTest.java to eliminate dependency on sun.misc.Launcher

[Alan Bateman]

On 28/11/2014 10:35, Amy Lu wrote:
> jdk/test/java/nio/charset/Charset/NIOCharsetAvailabilityTest.java has 
> dependency on sun.misc.Launcher
> This fix is to remove above internal API dependency from the test.
>
> bug: https://bugs.openjdk.java.net/browse/JDK-8066131
> webrev: http://cr.openjdk.java.net/~weijun/8066131/webrev.00/
The change looks okay but I think the test needs a bigger overhaul. The 
main thing is that the extensions directory goes away via JEP 220 so I 
think some of this test can go away too. The other thing is that 
getClassList appears to treat URL paths as file paths so it might not 
never have worked as expected on all platforms.

-Alan.