Install to fixed location, update tests, update readmes

I've updated the cookbook so it will work with v9.001 Developer edition, recently released.
The previous scripts made assumption that the runtime product was always installed under /opt/ibm/mqsi/9.0.0.0 and this wasn't quite right.
I have tested on Ubuntu 12.04 and works for me although I haven't been able to try all the kitchen tests.  Any chance you can help me out with this (or with testing on RedHat)