relax SVN archive

Bug fix for the saving/loading of a results file in GUI mode.

The save files were containing the ds.relax_gui object and restoring it on loading. This caused
the data storage of the GUI to change underneath the GUI resulting in a crash or race conditions.

The spin viewer tree update() method now acquires both the pipe and spin locks.

This prevents a major source of race conditions.

All of the acquire() and release() calls to status.spin_lock are now within "try ... finally" blocks.

This ensures that the lock will be released at the end.

All of the acquire() and release() calls to status.pipe_lock are now within "try ... finally" blocks.

This ensures that the lock will be released at the end.

The pipe_lock and spin_lock (via Relax_lock) locks are now reentrant locks.

This allows nested locking via one thread, which is necessary as the functions of generic_fns.pipes
and generic_fns.mol_res_spin often call functions of the same module in a nested way.

Debugging is turned off in the Relax_lock object.

Created an object called Relax_lock to help debug locking issues in relax.

The status.spin_lock lock is now using Relax_lock.

Alphabetical arrangement of the classes in the status module.

All of the generic_fns.mol_res_spin fns which modify the data structure are now using the new lock.

Created the status.reset() method to resetting the status object.

This will be used in the test suite.