OpenCV Samples testing problems fixed:

Memory leak in color-blob-detection sample fixed;
Default face size in face-detection is set to 20%;
Error handling improved;
Some possible mat leak fixed;
Manager verison and engine interface version incremented to fix incompatibilities;
Docs updated;

android/service/doc/build_uml.py

@@ -20,4 +20,4 @@ if (not os.path.exists(TARGET_PATH)):
 
 for filename in os.listdir("."):
     if ("dia" == filename[-3:]):
-    os.system("%s --export %s %s" % (DiaPath, os.path.join(TARGET_PATH, filename[0:len(filename)-4] + ".png"), filename))
+        os.system("%s --export %s %s" % (DiaPath, os.path.join(TARGET_PATH, filename[0:len(filename)-4] + ".png"), filename))