relax SVN archive

Completed the fix for bug #7787 (https://gna.org/bugs/?7787).

This bug was reported by Stephen Headey (https://gna.org/users/sjheadey).

These changes to the 'full_analysis.py' script fixes the problem of fixing the diffusion tensor when
the local_tm model has been selected. Also the relax namespace is now passed into the main class.

Partial fix for bug #7787 (https://gna.org/bugs/?7787).

This bug was reported by Stephen Headey (https://gna.org/users/sjheadey).

The issue is that if the 'full_analysis.py' script is improperly used, the error messages don't tell
you what the real issue is. In the bug report, the problem was that only a single round of
optimisation of the sphere, spheroids, and ellipsoid was being run. The 'full_analysis.py' script
has therefore been modified to catch this and throw a RelaxError describing the issue.

Updated the API documentation page to say that the 1.2 documentation corresponds to version 1.2.9.

WORK IN PROGRESS: updates to use correct search paths and work when
starting from any unit test directory

note some documentation maybe inaccurate or incomplete

Updated the test suite to call 'reset()' rather than its old name of 'init_data()'.

Updated all the sample scripts to use the new PDB reading user function name 'structure.read_pdb()'.

Renaming of the user function 'init_data()' to 'reset()'.

For more details see https://mail.gna.org/public/relax-devel/2006-11/msg00145.html (Message-id:
<7f080ed10611102042q55068c56l42aa691764f18d66@...>).

Updated the '__init__.py' files for the 'pdb' to 'structure' rename.

Because of the previous commit (renaming 'pdb' to 'structure'), much code needed updating.

All calls to the functions of 'self.relax.generic.pdb' were replaced with the equivalent function in
'self.relax.generic.structure'. For example all calls to 'self.relax.generic.pdb.read()' are now
'self.relax.generic.structure.read_pdb'.

All instances of 'self.relax.interpreter._PDB' in the test suite were replaced with
'self.relax.interpreter._Structure'.

Renamed the 'pdb' user function class to 'structure'.

For full details, see the post at https://mail.gna.org/public/relax-devel/2006-11/msg00081.html
(Message-id: <7f080ed10611062354i6c4c8601y825585c2c021b9ab@...>).