added dependencies and build files (loosely inspired by Sebastian Dorda's love-native-android)

jni/libmodplug-0.8.8.4/Android.mk

@@ -0,0 +1,22 @@
+LOCAL_PATH:= $(call my-dir)
+
+# libogg
+include $(CLEAR_VARS)
+
+LOCAL_MODULE    := libmodplug
+LOCAL_CFLAGS    := -fexceptions -g -Dlinux -DHAVE_GCC_DESTRUCTOR=1 -DOPT_GENERIC -DREAL_IS_FLOAT
+LOCAL_CPPFLAGS  := ${LOCAL_CFLAGS}
+
+LOCAL_C_INCLUDES  :=  \
+	${LOCAL_PATH}/src \
+	${LOCAL_PATH}/src/libmodplug
+		
+LOCAL_SRC_FILES := \
+	$(filter-out \
+  , $(subst $(LOCAL_PATH)/,,\
+	$(wildcard ${LOCAL_PATH}/src/*.cpp) ))
+
+$(info libmodplug: include dirs $(LOCAL_C_INCLUDES))
+$(info libmodplug: src files $(LOCAL_SRC_FILES))
+
+include $(BUILD_STATIC_LIBRARY)