Reviewed: JDK-8012530 : test/sun/security/provider/SecureRandom/StrongSeedReader.java failing

[Brad Wetmore]

This is a simple fix that Alan Bateman noticed during our nightly testing.
On some Linux, the java.io.tmp directory does not include the trailing 
"/", but does on others OS.  Apparently, on my JPRT run, whatever Linux 
machine this ran on did include the slash, or else I was asleep at the 
switch.

Anyway, I've reviewed and am integrating this on his behalf.

    http://cr.openjdk.java.net/~wetmore/8012530/webrev.00/

Thanks for pointing this out, Alan.

Brad