sambamba: 0.5.0-alpha (new formula)

Closes #1398.

Signed-off-by: Ian Lancaster <ilancaster@gmail.com>
sambamba: add 0.5.0 bottle.
Update hdf5 cxx options
fqzcomp 4.6: New formula

Closes #1390.

Signed-off-by: Ian Lancaster <ilancaster@gmail.com>
fqzcomp: add 4.6 bottle.