Enhance Seq to support hmmsearch input

e.g. Given a hit of a certain pvalue, retrieve the
flanking DNA/protein sequence (exactly as for a blast
hit for an example).

Possible but unlikely complications to doing this
enhancement

1) "Dependancy detector" may/may not need to be
enhanced given that seq may now have 2 possible sources
of input.

2) Possible problem of two seq searches needed on the
same database (one from blast, one from hmmpfam). If
this can be run in two table columns as I'm expecting
this is a fine fix, but it is possible the database
will not allow this.

Possible solution:

Have a distinct "hseq" search or data file type. This
could be implemented either at the front end only or
all the way back into the code to preserve the 1:1
mapping of programs to file types. The downside with
having two distinct programs is probably obvious as we
go forward.