[#2179,#2180]:Fix some bugs.

[moshoujingli]

Fix that the exclusion check not effects the path which in the exclusion list itself.
Fix sometimes change log config not work.

[asolntsev]

@xael-fry PR approved. Recommended to merge.

[moshoujingli]

seems another bug in my env.

[asolntsev]

@moshoujingli The build is failing. Can you explain why you changed class Logger.java?
In the failing test, your new code Thread.currentThread().getContextClassLoader().getResource(log4jPath) cannot find file log4j.properties.

Tough, the old code Logger.class.getResource(log4jPath) could find it: jar:file:/Users/andrei/projects/play/framework/play-1.5.x-1.5.1-9-gc59fc318.jar!/log4j.properties

[xael-fry]

Fix it in #1379