relax SVN archive

The grid_search user function inc arg cannot be None!

Fix for the val arg test of the value.set user function.

This argument can now be any value or list of values!

Fixes for all the calls to the spin.create user function in the unit tests.

The argument order has been changed, so now these are called only with keyword arguments.

Fix for the eliminate uf args arg unit test - this argument can be None!

Missing RelaxError import!

Fix for the residue.create res_num arg unit test.

This can now be None in relax!

Fix for the eliminate user function prompt unit test set up.

These tests now run.

Fixes for the changes to the pymol and molmol macro user function arguments.

The colour args have been split up into a name and RGB list now.

Fix for a number of user function definitions.

These problems were picked up by the unit tests.

Fix for the state.save user function definitions - the compress_type arg cannot be None!