Important changes of spring security 4.0.0-CI-SNAPSHOT

Hallo.

Please accept those changes, due to droped deprecated interface WebSecurityExpressionHandler in newest spring security version, which is currently 4.0.0-CI-SNAPSHOT.

WebSecurityExpressionHandler was an extended class with no additional attributes:
https://github.com/spring-projects/spring-security/blob/3.2.x/web/src/main/java/org/springframework/security/web/access/expression/WebSecurityExpressionHandler.java

I replaced the deprecated interface with the default SecurityExpressionHandler:
https://github.com/spring-projects/spring-security/blob/master/core/src/main/java/org/springframework/security/access/expression/SecurityExpressionHandler.java

And successfully tested it locally with spring 4.1.0.RELEASE and 4.0.0-CI-SNAPSHOT.
Before testing with the 2.1.2-SNAPSHOT version of this dependency my webapp was complaining about the missing interface in this changed class. Afterwards it ran as usual.

Best Regards
Tom-Steve Watzke