Added support for response coefficient scanning with Scan1

I implemented response coefficient scanning with Scan1. To make the solution as generic as possible, I've changed it so that ec's, cc's and rc's are now gotten from their respective BagOfStuff objects (m.ec, m.cc, m.rc) instead of from m.ecR1_s1 etc.

Note also that it now allows both 'ccJR1_R1' and 'ccR1_R1' style scan_out items. The second makes more sense given the use of m.cc.get('R1', 'R1'). The same for rc's.

Let me know what you think. I'd like to implement it for Scanner as well. In fact I have done already as a quick fix for something I wanted to do. Just need to find the code again ;)