relax SVN archive

Removed the svnmerged-integrated property. Don't know how this got here.

Created a branch for some nasty breakages and testing new ideas.

The command used was:
svn cp svn+ssh://bugman@.../svn/relax/1.3 svn+ssh://bugman@.../svn/relax/branches/spin_loop_bool

The spin_loop and its siblings cannot currently handle the branching tree formed by the Selection
object (nested within Selection._union and Selection._intersect). For example if there are two
molecules loaded into the data store, 'Ap4Aase' and 'RNA', the spin_loop with the spin id string
'#Ap4Aase:Glu | #RNA@...' loops over all spins of both molecules!!! Therefore all the usages of the
Selection object need to be redesigned, and possibly the Selection object itself.

Wrote the unit test test_spin_loop_boolean_or().

Wrote the test_spin_loop_single_spin() unit test.

Converted test_boolean_or_selection() to test_Selection_boolean_or().

The Selection object is being fully probed.

A few changes to the test_boolean_complex_selection() unit test.

Fixes for the test_Selection_complex_boolean() unit test.

Expanded and completed the test_Selection_complex_boolean() unit test of "#Ap4Aase:4 & :Pro | #RNA".

Code rearrangment in the test_Selection_boolean_and() unit test.

Wrote a unit test for the Selection object for boolean '&' mol-res-spin selections.