stacks 1.21

Depends on htslib rather than samtools for BAM support.
stacks 1.21: Remove --disable-openmp

It is not necessary to use --disable-openmp with clang 6.0.
infernal 1.1.1: Add tag bioinformatics
qualimap: update to v2.0

Closes #1348.
sailfish 0.6.2: Fails to build with clang 600

Add bioinformatics tag.
jellyfish-1.1: fails with clang

Closes #1354.
bedtools 2.22.0

Closes #1351.
sailfish 0.6.3
Bump fails_with clang

Closes #1355.
zoltan 3.81

New version of Zoltan (3.81).

Closes #1349.
gdcm: add option to build with vtk

Closes #1331.
gdcm: add c++11 option

Closes #1356.
insighttoolkit: add option to build ITK with gdcm

Closes #1332.
gromacs: deprecate options
netcdf: deprecate option
cmor: update netcdf option
edirect: update sha1
infernal: update check option
paraview: general cleanup
parmetis: general cleanup