[BioRuby] Blast Format8 hsps' patch

[Raoul Jean Pierre Bonnal]

Hi Guys, 
I found a bug in the parser. Take this example:


contig00002     gi|15902044|ref|NC_003098.1|    99.71   1399    4
0       5       1403    414678  416076  0.0     2742
contig00002     gi|118090026|ref|NC_003028.2|   98.25   858     5
1       556     1403    448891  449748  0.0     1592
contig00003     gi|116515308|ref|NC_008533.1|   99.67   2997    7
2       1       2994    423818  426814  0.0     5848
contig00003     gi|15902044|ref|NC_003098.1|    99.67   2997    7
2       1       2994    416288  419284  0.0     5848
contig00003     gi|118090026|ref|NC_003028.2|   99.60   2997    9
2       1       2994    449959  452955  0.0     5832
contig00004     gi|118090026|ref|NC_003028.2|   98.08   2238    40
3       5       2242    453000  455234  0.0     4072
contig00004     gi|116515308|ref|NC_008533.1|   97.94   2238    43
3       5       2242    426859  429093  0.0     4048
contig00004     gi|15902044|ref|NC_003098.1|    97.94   2238    43
3       5       2242    419329  421563  0.0     4048


about last contig00003 the parser create an hit with 2 hsps, putting
togheter results from last contig00003 and first contig00004, this is
wrong. The code check only if the target is different from the prev one,
in this case the target is the same but the query is different. 

In attach the patch to solve the problem, I put a chk on the query too.

Actually I don't know if the problem is present with other parsers.

Best regards.

--
Ra