Do we need a idp-saml-spring module?

[Rod Widdowson]

A throw-away remark by Scott got me wondering - As we are stripping the SAML
stuff from attribute-resolver-impl, can we strip the parsing of those
elements out from attribute-resolver-spring.

I did a little experiment and it seems that this might be possible - we
would then just need to make idp-saml-spring a runtime dependency of
attribute-resolver-spring.  

 - Do we want to do this?
 - If so can someone either point me at the documentation or do the work
(and while they are at it remove idp-attribute-mapper-*)

Related to this, the schema files have traditionally lived in
attribute-resolver-spring, but now they would be smeared across two module
and the dependencies would mean that the base schema would be in the wrong
place.

However the schema represents part of our API, so I was wondering whether in
fact the schema files do not actually belong in idp-attribute-resolver-api
(or at least the base schema).

Rod