flatten the make system a little bit by providing only modules as a
compilation unit.
to add a module as a dependency of another, just add to the MODULE make
variable, instead of APPS/LIBS/DEVS
diff --git a/project/sam7ex256-test/rules.mk b/project/sam7ex256-test/rules.mk
index 1c775f3..ecf391a 100644
--- a/project/sam7ex256-test/rules.mk
+++ b/project/sam7ex256-test/rules.mk
@@ -3,7 +3,8 @@
LOCAL_DIR := $(GET_LOCAL_DIR)
TARGET := sam7ex256
-APPS := tests
+MODULES += \
+ app/tests
OBJS += \
$(LOCAL_DIR)/init.o