Add pre-built app to AOSP

For instance: I add my app named MZA

How to add: Following are the steps to add MZA application to Android as basic app.
i.    Copy MZA source code folder to /mydroid/packages/apps/ folder.
ii.    Create Android.mk file inside MZA directory.

                    Android.mk    looks like

.                 LOCAL_PATH := $(call my-dir)

.                    include $(CLEAR_VARS)

.                    LOCAL_STATIC_JAVA_LIBRARIES := libarity

.                    LOCAL_SRC_FILES := $(call all-java-files-under, src)

.                    LOCAL_PACKAGE_NAME := MZA

.                    include $(BUILD_PACKAGE)

iii.     Edit generic.mk or generic_no_telephone.mk or devices.mk or board_name.mk  to add line for  MZA ( 2 file đầu trong thư mục build, 2 file sau trong thư mục devices)

                   looks like

.         PRODUCT_PACKAGES := \

.                    AccountAndSyncSettings \

.                    AlarmClock \

.                    MZA\

                     ...........

iv.    Now Compiled source code

v.     After compilation is completed you will see MZA installed, and MZA.apk in system/app/ in folder out