added mk files for NDK-builder of opencv_java project

android/jni/Android.mk

@@ -0,0 +1,12 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+OPENCV_CAMERA_MODULES := off
+include OpenCV.mk
+
+LOCAL_MODULE    := opencv_java
+LOCAL_SRC_FILES := android.cpp calib3d.cpp features2d.cpp imgproc.cpp ml.cpp utils.cpp VideoCapture.cpp  core.cpp highgui.cpp Mat.cpp objdetect.cpp video.cpp
+LOCAL_LDLIBS +=  -llog -ldl -ljnigraphics
+
+include $(BUILD_SHARED_LIBRARY)

android/jni/Application.mk

@@ -0,0 +1,3 @@
+APP_STL := gnustl_static
+APP_CPPFLAGS := -frtti -fexceptions
+APP_ABI := armeabi-v7a