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

[Tim Bell]

Hi Erik:

> 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

Looks good to me.

Tim