Provide LOCAL_DIR as some product variables might need a reference directory (i.e. PRODUCT_COPY_FILES).

Change from LOCAL_DIR to LOCAL_PATH
diff --git a/core/node_fns.mk b/core/node_fns.mk
index 8b026f5..5d2a669 100644
--- a/core/node_fns.mk
+++ b/core/node_fns.mk
@@ -186,7 +186,9 @@
 define _import-node
   $(eval _include_stack := $(2) $$(_include_stack))
   $(call clear-var-list, $(3))
+  $(eval LOCAL_PATH := $(patsubst %/,%,$(dir $(2))))
   $(eval include $(2))
+  $(eval LOCAL_PATH :=)
   $(call copy-var-list, $(1).$(2), $(3))
   $(call clear-var-list, $(3))