Print reversed-complemented sequences

[AndreaGuarracino]

Real read sequences:

>A00132:53:HFHJKDSXX:2:1335:29622:10520_R2
TTATGGTTCACCAACAGTTATTTCACTTTAAGGCAGTCTAAATAGAGGATTTCATGGAGTTAAATCAGACCGTTTGTGGGAAAATTGTTTCTTAAAAAAAAAAAACATTTTAAAGGAAAGGATGATGATTTGTTGTTTTTGGTTTTTTTC
>A00132:53:HFHJKDSXX:2:1335:29622:10520_R1
ATTTTGCCACGTTGTCCAGCCTGGTCTCGAACTCCTGGCCTCAAGTGATCAGCCCTCCTCAGCCTCCCAAAGTGCTGGCATTACAGGCATGAGTCACTGCGCCCAGCCTGTTGGGTTTTTTTGGAAAAAAACCAAAAACAACAAATCATC

Input alignments:

 cat c.gaf | column -t
A00132:53:HFHJKDSXX:2:1335:29622:10520_R2  150  0  150  +  >23>24>25>27>28>31>32>33>35>36     175  1   151  150  150  0  cg:Z:150M
A00132:53:HFHJKDSXX:2:1335:29622:10520_R1  150  0  150  +  <45<44<42<41<40<39<37<36<35<33<32  209  30  180  150  150  0  cg:Z:150M

Before this PR:

fgfa -i x.fgfa gaf c.gaf -s

A00132:53:HFHJKDSXX:2:1335:29622:10520_R2       TTATGGTTCACCAACAGTTATTTCACTTTAAGGCAGTCTAAATAGAGGATTTCATGGAGTTAAATCAGACCGTTTGTGGGAAAATTGTTTCTTAAAAAAAAAAAACATTTTAAAGGAAAGGATGATGATTTGTTGTTTTTGGTTTTTTTC
A00132:53:HFHJKDSXX:2:1335:29622:10520_R1       GCGAGTTCGAGACCAGGCTGGACAACGTGGCAAAGTGAGGAGGGCTGATCACTTGAGGCCACTCATGCCTGTAATGCCAGCACTTTGGGAGGCACAGTGTTTTTTTCCAAAAAAACCCAACAGGCTGGGCGGGATTTGTTGTTTTTGAAA

After this PR:

A00132:53:HFHJKDSXX:2:1335:29622:10520_R2       TTATGGTTCACCAACAGTTATTTCACTTTAAGGCAGTCTAAATAGAGGATTTCATGGAGTTAAATCAGACCGTTTGTGGGAAAATTGTTTCTTAAAAAAAAAAAACATTTTAAAGGAAAGGATGATGATTTGTTGTTTTTGGTTTTTTTC
A00132:53:HFHJKDSXX:2:1335:29622:10520_R1       ATTTTGCCACGTTGTCCAGCCTGGTCTCGAACTCCTGGCCTCAAGTGATCAGCCCTCCTCAGCCTCCCAAAGTGCTGGCATTACAGGCATGAGTCACTGCGCCCAGCCTGTTGGGTTTTTTTGGAAAAAAACCAAAAACAACAAATCATC

[sampsyo]

This is great; thank you for catching this!!

[sampsyo]

While this approach was perfectly good, it made me finally get around to trying a "lazy" reverse-complement strategy in #197.