Get the Buck build working again.
Fix the Eclipse config.

The new gson dependency wasn't added. Now is :)

Also switched a call in HtmlUnitWebElement to use guava rather than commons-lang
since that's already included in the build configs for both Buck and CrazyFun.

Signed-off-by: Simon Stewart <simon.m.stewart@gmail.com>
Bump the buck version
Merge remote-tracking branch 'github-selenium/master'