Export the new system_server classpath.

bug: 16555230

Change-Id: I99d2d219b5bd6dc4807cb53e44dc5715cc0815b3
diff --git a/rootdir/Android.mk b/rootdir/Android.mk
index aca08bf..3ecb1db 100644
--- a/rootdir/Android.mk
+++ b/rootdir/Android.mk
@@ -31,7 +31,7 @@
 include $(BUILD_SYSTEM)/base_rules.mk
 
 # Regenerate init.environ.rc if PRODUCT_BOOTCLASSPATH has changed.
-bcp_md5 := $(word 1, $(shell echo $(PRODUCT_BOOTCLASSPATH) | $(MD5SUM)))
+bcp_md5 := $(word 1, $(shell echo $(PRODUCT_BOOTCLASSPATH) $(PRODUCT_SYSTEM_SERVER_CLASSPATH) | $(MD5SUM)))
 bcp_dep := $(intermediates)/$(bcp_md5).bcp.dep
 $(bcp_dep) :
 	$(hide) mkdir -p $(dir $@) && rm -rf $(dir $@)*.bcp.dep && touch $@
@@ -40,6 +40,7 @@
 	@echo "Generate: $< -> $@"
 	@mkdir -p $(dir $@)
 	$(hide) sed -e 's?%BOOTCLASSPATH%?$(PRODUCT_BOOTCLASSPATH)?g' $< >$@
+	$(hide) sed -i -e 's?%SYSTEMSERVERCLASSPATH%?$(PRODUCT_SYSTEM_SERVER_CLASSPATH)?g' $@
 
 bcp_md5 :=
 bcp_dep :=