Upgrade spring dependencies

Upgrade spring dependencies to fix build errors
Fix spring version for all components.

This will the problem behind #35.
It will keep working when spring 4.0.0 is released.
Merge pull request #35 from gilgamez/master

Upgrade spring dependencies
Merge pull request #36 from steven-aerts/fix_spring_versions

Fix spring version for all components.
update OpenSAML version
[maven-release-plugin] prepare release apis-parent-1.3.5
[maven-release-plugin] prepare for next development iteration