Fix for bug 13032: Bug in structure.create diff tensor pdb
The Dz unit in dependency_generator() were erroneous, inputing 'alpha' and 'beta' instead of 'beta' and 'gamma'.
This had the effect of creating a weird shaped ellipsoid diffusion tensor representation when 'alpha' and 'beta' were set to unequal values.
This is now fixed, yielding properly shaped diffusion tensor representations for any angles 'alpha', beta' and 'gamma'.
Authored by: semor 2009-03-16
Parent: [r8978]
Child: [r8980]
