Tweak test to avoid SeqFeature sub_features deprecation warning
Test sub-locations explicitly for fuzzy joins
Make test description match actual function call
GenPept file with CONTIG and ORIGIN lines

Generated via Entrez.efetch(protein, id=16130152, rettype=gbwithparts)
which currently results in test_SeqIO_online.py failing.
Cope with strange GenPept files with CONTIG and ORIGIN lines.

These may be a temporary oddity from the NCBI Entrez API,
but currently breaking test_SeqIO_online.py -- see example
file Tests/GenBank/NP_416719.gbwithparts
Test new GenBank fix with online example