Rewrote the Android M3 client to do continuous decoding, which means you no longer...

Rewrote the Android M3 client to do continuous decoding, which means you no longer have to push the shutter button. Now you can just place the barcode in the viewfinder and it will display the contents as soon as it decodes them. That also means you no longer get "barcode not found" error dialogs which is a big improvement. Also made sure that capturing debug JPEGs uses unique filenames.

git-svn-id: http://zxing.googlecode.com/svn/trunk@352 59b500cc-1b3d-0410-9834-0bbf25fbcc57