Porting diffs to wiki

As promised (a long time ago), I've ported the documents describing
the diffs between SAML V2.0 and {SAML V1.1, ID-FF 1.2} to the wiki:

http://wiki.oasis-open.org/security/SAMLDiffs
http://wiki.oasis-open.org/security/SAMLLibertyDiffs

I believe this content belongs in the wiki, not saml.org.

Tom