update submodule
remove never used imports.
replace deprecated Guava methods with recommended methods.
add serialVersionUID to remove warning from Eclipse.
refs #5: support FindBugs eclipse plugin configuration.
support Kepler SR2.
fixbug: slf4j-api should be bundled in distribution.
refs #5: let cli to call findbugs eclipse plugin configuration.
now "kepler" points 4.3.2
Feature to install Eclipse should support OSX.

package for OSX is distributed as .tar.gz file, so we should
stop using zip4j and shift to other library.
Merge branch 'master' into findbugs-eclipse
fix broken test case by 5460cf75.
refs #5: initialize Eclipse workspace.
fix broken test case by 5460cf75.
performance improvement: postpone downloading Eclipse from WEB
performance improvement: omit needless file copy.
Merge branch 'findbugs-eclipse'
introduce coveralls to check coverage.
refs #4: move heap size configuration into WebSphereConfiguration.
refs #4: merge CommonWASConfiguration into WebSphereConfiguration.