RFR: JDK-8025936: Windows .pdb and .map files does not have proper dependencies setup

[Erik Joelsson]

Please review this fix for dependencies on windows pdb and map files. 
While in the area, I took the liberty of cleaning up a bit and removing 
some duplication.

Webrev: http://cr.openjdk.java.net/~erikj/8025936/webrev.01/
Bug: https://bugs.openjdk.java.net/browse/JDK-8025936
/Erik