message: build two htslibs...
  This isn't ideal but it seems to be required given the vcflib/SeqLib divide.
diff: @@ -48,6 +48,9 @@ gprof:
  $(HTSLIB_ROOT)/libhts.a:
  cd $(HTSLIB_ROOT) && make
  +$(SEQLIB_ROOT)/htslib/libhts.a:
  + cd $(SEQLIB_ROOT)/htslib && make
  +
  $(SEQLIB_ROOT)/src/libseqlib.a:
  cd $(SEQLIB_ROOT) && ./configure && make
  