RFR: JDK-8245401: AbsPathsInImage.java fails on Windows on jdwp.dll

[Erik Joelsson]

After some recent changes in JDI related code, we now have a new failure 
in AbsPathsInImage.java on Windows. This keeps cropping up, so in this 
change I'm changing the exception in the test to simply ignore all *.dll 
files.

Bug: https://bugs.openjdk.java.net/browse/JDK-8245401

Webrev: http://cr.openjdk.java.net/~erikj/8245401/webrev.01/index.html

/Erik