RFR: JDK-8155629: MODULES_FILTER should apply to imported modules

[Erik Joelsson]

We have a mechanism to exclude certain modules completely from a build. 
This is handled with the MODULES_FILTER variable. It's currently flawed 
in that it doesn't apply to imported modules (--with-import-modules).

Bug: https://bugs.openjdk.java.net/browse/JDK-8155629
Patch:
diff -r d8b1e1832b0e make/common/Modules.gmk
--- a/make/common/Modules.gmk
+++ b/make/common/Modules.gmk
@@ -186,7 +186,8 @@
      $(call GetModuleNameFromModuleInfo, $(MODULE_INFOS))))

  FindImportedModules = \
-    $(if $(IMPORT_MODULES_CLASSES), $(notdir $(wildcard 
$(IMPORT_MODULES_CLASSES)/*)))
+    $(filter-out $(MODULES_FILTER), \
+    $(if $(IMPORT_MODULES_CLASSES), $(notdir $(wildcard 
$(IMPORT_MODULES_CLASSES)/*))))

  # Find all source dirs for a particular module
  # $1 - Module to find source dirs for


/Erik