merged
refactoring changed the packages
Change logger library from java.logging to slf4j(+ logback)
refactoring: change some packages.
implemented DumServer.

simplest unit test is ok.
update build.xml
changed permission of all files to 755
renamed from jcip-annotations-src-2.jar
completed Normal storage's end to end test.
Merge branch 'implement_normal' of https://github.com/reddikih/ykstorage into implement_normal