Deprecating old versions of Scala

The Scala in CCP4 6.0.2 still appears to be "supported" in xia2 however the version is 5 years old now and has to have special code! I am therefore removing support for this, so you will need to be using CCP4 6.1 or later (which I am 99% sure you need anyway)

If you see this:

                *******************************************
                *    SCALA - continuous scaling program   *
                *                                         *
                *    Version: 3.2.25                      *
                *    Date   : 21/9/2006                   *
                *                                         *
                *   Phil Evans, MRC LMB, Cambridge, UK    *
                *   pre@mrc-lmb.cam.ac.uk                 *
                *                                         *
                *******************************************

when you type "scala" xia2 will probably stop working after a forthcomin update. Need to reduce the effects of code bloat.

Sorry!