Remove assumption that there are 64 or fewer fields.

An upcoming commit will increase the number of fields beyond 64.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
meta-flow: Add 64-bit registers.

These 64-bit registers are intended to conform with the OpenFlow 1.5
draft specification.

EXT-244.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>