Trim trailing whitespace. It doesn't match OpenSSL coding standards,
AFAICT, and it can cause problems with git tooling.

Trailing whitespace remains in test data and external source.
Reviewed-by: NKurt Roeckx <kurt@roeckx.be>
Reviewed-by: NMatthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: NRichard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8092)

This replaces the old SKIP primes with the most current Diffie-Hellman
MODP groups defined by RFC 7296 and RFC 3526.
Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from GitHub https://github.com/openssl/openssl/pull/775)

These have been created by a SHA.1 based procedure, see
http://www.skip-vpn.org/spec/numbers.html.
(These values are taken from that document, I have not
implemented the prime generator.)