Adding some PARI/GP related packages, to be used by SageMath:
- gp2c: Package for translating GP routines into C
- pari_elldata: Elliptic Curve Data for PARI/GP
- pari_galdata: Data needed by PARI/GP for polgalois
- pari_galpol: Database of Galois polynomials for PARI/GP
- pari_nftables: Repackaging of the historical megrez number field tables
- pari_seadata: Modular polynomials for PARI/GP