Merge pull request #414 from pedroigor/master

[PLINK-543] - For better compatibility PL IDP should combine multiple AttributeStatemnt's into a single AttributeStatement.
[BZ1069126] STS client pool changed to per deployment support
Merge pull request #415 from pskopek/STSPool-multiple-deps

[BZ1069126] STS client pool changed to per deployment support