RFR: 8252998: ModuleWrapper.gmk doesn't consult include path

[Adam Farley8]

Hi All,

Requesting reviews and sponsor for the following change.

A previous change (JDK-8244044) appears to prevent make from checking the 
include dirs for an included gmk file.

This means that you can't override the included file using the include 
dirs, as was previously the case.

This sounds like a bug, and should be fixed. 

Thoughts welcome.

Bug: https://bugs.openjdk.java.net/browse/JDK-8252998

Webrev: http://cr.openjdk.java.net/~afarley/8252998/webrev/ 

Best Regards

Adam Farley 
IBM Runtimes

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