Whitespace changes
Simplify masking
Add nonnull hint
Add fr_ptonx, fr_ntop and is_wildcard IP address functions
Switch to using fr_ipaddr_t for client prefixes, and allow ipaddr and ipaddr6 config items to be prefixes. Addresses #581.
Add fr_ipaddr_mask to fixup fr_ipaddr_t's by zeroing out the host portion of the address
Minor typos in error messages
Fix issue where use of FreeRADIUS-Client-IPv6-Prefix and FreeRADIUS-Client-IPv4-Prefix when creating dynamic client entries, would trigger an error.