merging changes from OPAE branch making this branch

benchmarks/opencl/convolution/utils.h

@@ -0,0 +1,11 @@
+#ifndef __UTILS__
+#define __UTILS__
+
+typedef unsigned char uchar;
+
+float* readImage(const char *filename, int* widthOut, int* heightOut);
+
+void storeImage(float *imageOut, const char *filename, int rows, int cols, 
+                const char* refFilename);
+
+#endif