A chance to make changes to the AttributeFilter language Element names, and a request.

[Rod Widdowson]

For reference I'm about to checkin the following changes:

basic:AttributeRequesterString 	afp:Requester
basic:AttributeIssuerString 		warn in basic:  not present in afp:
basic:AttributeRequesterRegex 	afp:RequesterRegex
basic:AttributeIssuerRegex 		warn in basic:  not present in afp:

basic:PrincipalNameString 		afp:PrincipalName
basic:PrincipalNameRegex 		afp:PrincipalNameRegex (unchanged)
basic:AuthenticationMethodString 	afp:AuthenticationMethod
basic:AuthenticationMethodRegex 	afp:AuthenticationMethodRegex
(unchanged)

basic:AttributeValueString 		afp:Value
basic:AttributeScopeString 		afp:Scope
basic:AttributeValueRegex 		afp:Regex
basic:AttributeScopeRegex 		afp:ScopeRegex

Everything else has gone basic:foo -> afp:foo or saml:bar -> afp:bar

With that stables, I'll start my way through the example configurations and
documentation