Manually ported r4619 and r4620 from the 1.2 line.
This allows one to specify no file for unresolved residues with the full_analysis.py script.
The command used was: svn merge -r4618:4620 svn+ssh://semor@.../svn/relax/1.2
Authored by: semor 2008-01-11
Parent: [r4648]
Child: [r4650]
