fixing a bug in the local.env.mk setup, and correcting the readme's

Also, the androi-opencv.mk.in wasn't correct for one of the crystax NDK
build directory setups

android/android-jni/README.txt

@@ -7,10 +7,10 @@ into native opencv functions(as cv::Mat's)
 
 to build make sure you have swig and the crystax ndk in your path
 
-cp sample.local.env.mk local.env.mk
 make
 
-that should work...
+that should work...  If it doesn't make sure to edit the generated local.env.mk
+the key variable
 
 more later on how to build actual project for android 
     - see the code.google.com/p/android-opencv for details on this

android/android-jni/sample.env.mk

-#location of android-opencv port of OpenCV to android
-OPENCV_CONFIG=../build/android-opencv.mk
-ANDROID_NDK_ROOT=$(HOME)/android-ndk-r4-crystax
-

android/android-jni/sample.local.env.mk

+#location of android-opencv.mk file that was generated by the cmake build
+#of opencv for android
+OPENCV_CONFIG=../build/android-opencv.mk
+
+#the root directory of the crystax r4 ndk - ndk-build should be in this dir
+#you can download the ndk from http://www.crystax.net/android/ndk-r4.php
+ANDROID_NDK_ROOT=$(HOME)/android-ndk-r4-crystax
+

android/android-opencv.mk.in

@@ -14,14 +14,21 @@ ifndef OPENCV_BUILD_ROOT
 OPENCV_BUILD_ROOT := ${CMAKE_BINARY_DIR}
 endif
 
-OPENCV_INCLUDES := ${android_module_include_dirs} $(OPENCV_ROOT)/android/android-jni/jni
+OPENCV_INCLUDES := ${android_module_include_dirs}
+
 ANDROID_OPENCV_INCLUDES := $(OPENCV_ROOT)/android/android-jni/jni
 
-ARMOBJS := obj/local/armeabi
-ARMOBJS_V7A := obj/local/armeabi-v7a
-OPENCV_LIB_DIRS := -L$(OPENCV_BUILD_ROOT)/$(ARMOBJS_V7A) -L$(OPENCV_BUILD_ROOT)/$(ARMOBJS)
+ARMOBJS := local/armeabi
+ARMOBJS_V7A := local/armeabi-v7a
+
+OPENCV_LIB_DIRS := -L$(OPENCV_BUILD_ROOT)/obj/$(ARMOBJS_V7A) \
+    -L$(OPENCV_BUILD_ROOT)/obj/$(ARMOBJS) -L$(OPENCV_BUILD_ROOT)/bin/ndk/$(ARMOBJS) \
+    -L$(OPENCV_BUILD_ROOT)/bin/ndk/$(ARMOBJS_V7A)
 
-ANDROID_OPENCV_LIB_DIRS := -L$(OPENCV_ROOT)/android/android-jni/$(ARMOBJS_V7A) -L$(OPENCV_ROOT)/android/android-jni/$(ARMOBJS)
+ANDROID_OPENCV_LIB_DIRS := -L$(OPENCV_ROOT)/android/android-jni/obj/$(ARMOBJS_V7A) \
+    -L$(OPENCV_ROOT)/android/android-jni/obj/$(ARMOBJS) \
+    -L$(OPENCV_ROOT)/android/android-jni/bin/ndk/$(ARMOBJS_V7A) \
+    -L$(OPENCV_ROOT)/android/android-jni/bin/ndk/$(ARMOBJS)
 
 #order of linking very important ---- may have stuff out of order here, but
 #important that modules that are more dependent come first...