relax SVN archive

Fix for the Scientific PDB structural object atom_loop() method.

Empty molecule, residue, and spin names and numbers are now replaced with None before being returned.

Fix for the atom matching statement in the __find_bonded_atom() method.

Incomplete fixes for the __find_bonded_atom() method.

Fixed the setting up of the bond vector inside the SpinContainer.

Rearrangement of the header line print out.

Fix for the generic_fns.relax_re.search() function.

The re.search() function was clashing with the relax_re.search() function.

Added code to vectors() to determine if the attached atom is a proton or not.

Fixed all calls to generic_fns.mol_res_spin.wildcard_match().

The function is now called generic_fns.relax_re.search().

Spun out the wildcard_match() function into a new module for relax regular expression.

Reverted all bond_vector references to xh_vector.