* Update seacas package.py
Adding libcatalyst variant to seacas package
When seacas is installed with "seacas +libcatalyst"
then a dependency on the spack package "libcatalyst"
(which is catalyst api 2 from kitware) is added, and
the appropriage cmake variable for the catalyst TPL
is set. The mpi variant option in catalyst (i.e. build
with mpi or build without mpi) is passed on to
libcatalyst. The default of the libcatalyst variant
is false/off, so if seacas is installed without the
"+libcatalyst" in the spec it will behave exactly as
it did before the introduction of this variant.
* shortened line 202 to comply with < 100 characters per line style requirement
e3c5d5817b