fixing possible exception when reading SCF files 

occurs when reading SCF files without comments or private data

Signed-off-by: Hannes Brandstätter-Müller <hannes.mueller@gmail.com>
removed another (now unnecessary) check
added test cases for this bug
Merge pull request #1 from brandstaetter/scf-fix

fixing possible exception when reading SCF files that have no comment data
updating distribution management config
Merge pull request #5 from andreasprlic/devel

updating distribution management config
Merge branch 'master' of https://github.com/biojava/biojava-legacy