hooks-raddr-conv-pure

Hooks identify accounts by the 20 byte account ID, which can be converted from a raddr using the util_accid function. If the raddr never changes, a more efficient way to do this is precompute the account-id from the raddr.

This check warns about calls of util_accid with constant input and proposes to add a tracing statement showing the computed value (so that the user can use it to replace the call).