relax SVN archive

Initial lib.sequence_alignment.msa.central_star() function.

This was moved from lib.sequence_alignment.align_protein.align_multiple_from_pairwise().

Added the lib.sequence_alignment.align_protein.align_multiple_from_pairwise() function.

This should have been committed earlier. The function is only partly implemented.

Renamed the Test_align_protein.test_align_multiple_from_pairwise unit test.

This is now the Test_msa.test_central_star unit test of the _lib._sequence_alignment.test_msa unit
test module (it was originally in the _lib._sequence_alignment.test_align_protein unit test module).
This is in preparation for converting the
lib.sequence_alignment.align_protein.align_multiple_from_pairwise() function into the
lib.sequence_alignment.msa.central_star() function.

Attempt at fixing the lib.structure.internal.coordinates.common_residues() function.

This function still does not work correctly.

Expanded the docstring of the Test_align_protein.test_align_multiple_from_pairwise unit test.

This is from the _lib._sequence_alignment.test_align_protein unit test module.

Simplified the Test_coordinates.test_common_residues unit test by removing many residues.

This is from the _lib._structure._internal.test_coordinates unit test module.

Created the Test_align_protein.test_align_multiple_from_pairwise unit test.

This is in the _lib._sequence_alignment.test_align_protein unit test module. This test checks the
operation of the lib.sequence_alignment.align_protein.align_multiple_from_pairwise() function, which
does not yet exist.

Modified the lib.structure.internal.coordinates.common_residues() function.

It now accepts the seq argument which will caused the gapped sequence strings to be returned. This
is to allow for checking in the unit tests.

Created the Test_coordinates.test_common_residues unit test.

This is from the _lib._structure._internal.test_coordinates unit test module. The test shows that
the lib.structure.internal.coordinates.common_residues() function is working correctly. However the
printout, which is not caught by the test, is incorrect.

Created empty unit test infrastructure for testing the lib.structure.internal.coordinates module.