Fix POD for synopsis.

We want the synopsis to be verbatim so it's formatted correctly.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Add some test vectors from RFC 5903.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Update tests to compute the number of assertions.

This avoid having to update the tests every time more curves are added.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Add more curves.

This includes secp112r1, secp160r1, and secp160r2.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>