Full support for HTTP-POST binding in WebSSO profile. Two new directives in hosted metadata (SingleSignOnServiceBinding and SingleLogoutServiceBinding) to control the bindings published as supported in the metadata.

Bugfix in the logout handler (SOAP binding should be reused when responding a request).

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3257 44740490-163a-0410-bde0-09ae8108e29a