Fixes for the Relax_disp.test_hansen_cpmg_data_missing_auto_analysis system test for certain systems.
The optimisation precision has been increased, and the value checking precision has been decreased.
This change is to allow the test to pass on Python 2.5 and 3.1 on a 32-bit GNU/Linux system. This
may be related to 32-bit numpy 1.6.2 verses later numpy versions causing precision differences.
