Changes

* Fix for bug #21187 - the corrupted PDB issue with protons atom numbers of zero. The bug at https://gna.org/bugs/?21187 was reported by Martin Ballaschk (https://gna.org/users/mab). The fix was to allow for spin containers in the relax data store to have the same atom number, as long as the atom names are different.

* Modified the Monte Carlo simulation printout behaviour for the minimisation related user functions. This is to help in fixing bug #21190 (https://gna.org/bugs/?21190). This includes the calculate, grid_search, and minimise user functions. The new multi-processor is_queued() method is used to determine if the optimisation code of the specific analysis has queued rather than run the calculations. If queued, the 'Simulation X' text will not be printed out. This avoids printing out all the text at the start before anything has happened. The specific multi-processor optimisation code must provide it's own printouts when each calculation is complete.