hg: jdk10/sandbox: 8186983: CompileJavaModule.gmk overrides values from a custom extension gmk

[chris.hegarty at oracle.com]

Changeset: 13a1041e2950
Author:    erikj
Date:      2017-09-06 16:05 +0200
URL:       http://hg.openjdk.java.net/jdk10/sandbox/rev/13a1041e2950

8186983: CompileJavaModule.gmk overrides values from a custom extension gmk
Reviewed-by: ihse, dholmes
Contributed-by: jason_yong at uk.ibm.com

! make/CompileJavaModules.gmk