relax SVN archive

Huge speed up of the system tests for the loading and creation of model-free saved states.

The OMP files used for the system test have been truncated from 134 to 7 spins, changing the timing
of 6 system tests from 11-13 seconds to less than 0.5 seconds each.

The molmol.macro_run user function file argument now has a description.

Shifted all frequency data handling associated with relaxation data to pipe_control.spectrometer.

This includes the deletion of the relax_data.frq user function as this replicates the behaviour of
spectrometer.frequency. A number of functions from the pipe_control.relax_data module have changed:

- frq() has been deleted as it is replaced by pipe_control.spectrometer.set_frequencies(),
- frq_checks() has been shifted to pipe_control.spectrometer.frequency_checks(),
- frq_loop() has been shifted to pipe_control.spectrometer.loop_frequencies(),
- num_frq() has been deleted as the new variable cdp.spectrometer_frq_count contains this info.

Two new functions in the pipe_control.spectrometer module have been added to remove the
functionality from pipe_control.relax_data. These are copy_frequencies() and delete_frequencies().

The fix of r19727 was extended to Python versions 2.6 and lower as well.

Fix for the relax test suite on Python 3.1.

The TextTestRunner class in the unittest module is missing a few arguments present in all other
Python versions.

A whitelist is now being used to limit the number of frame order GUI tests to 1.

Added backwards compatibility support for the spectrometer frequency list and count.

This is needed for old relax state files.

Renamed the functions of the pipe_control.spectrometer module.

The frequency() and temperature() functions are now called set_frequency() and set_temperature().

The pipe_control.spectrometer.get_frequencies() function can now return MHz or Tesla units.

Fixes for the change to the new spectrometer.frequency user function and associated data structures.