Code Review 6935233: java/net/ServerSocket/AcceptCauseFileDescriptorLeak.java fails with modules build

[Christopher Hegarty -Sun Microsystems Ireland]

Alan, Michael,

java/net/ServerSocket/AcceptCauseFileDescriptorLeak.java fails with 
modules build because number of open file descriptors exceeds 20. 
Instead of a hardcoded number, the test should check the number of file 
descriptors does not increase much before and after its work.

Also, run in othervm so that the file descriptors in the particular 
process will be consistent.

Webrev:
   http://cr.openjdk.java.net/~chegar/6935233/webrev.00/webrev/

-Chris.