Alglib: numerical analysis and data processing library

Closes #1177.
getdp: Update sha1.

Closes #1300.
Sundials: update url.

The official Sundials site requires registration and doesn't provide
a direct download link any more.
Arpack: Use MPI compilers.

Closes #1294.
masurca 2.2.1: conflicts with jellyfish, parallel
cuba 4.0

Closes #1305.
netcdf: update fortran resource to 4.4.1

Closes #1301.