logging's SocketHandler: get rid of some legacy code and use the newer socket.create_connection() utility function

This makes the sha3 types unusable from the hmac module. HMAC-SHA3 hasn't been specified yet.

Force 32bit Keccak implementation on SPARC. It look like the Solaris CC compiler doesn't like the address alignment.

Improve the documentation of the dict constructor.  This change includes
replacing the single-line signature documentation with a more complete
multiple-line signature.

Improve the documentation of the dict constructor.  This change includes
replacing the single-line signature documentation with a more complete
multiple-line signature.

This change includes replacing the single-line signature documentation
with a more complete multiple-line signature.

- Make many variables local to the opcode; Kill u, v, w, and x.
- Force every opcode to end with DISPATCH or jump to error handling.
- Simplify error handling.
- Check error statuses in more places.

Closes #16191.