Add getRootObj to java clearsilver.  Gets the root object from a child or null if the current node is the root.
Add getRootObj to java clearsilver.  Gets the root object from
a child or null if the current node is the root.

Add java version of exportDate
apfeltee/clearsilver,hobby/clearsilver,alisonjoe/clearsilver,hczhang/clearsilver,apfeltee/clearsilver,hobby/clearsilver,manuelluis/clearsilver,alisonjoe/clearsilver,alisonjoe/clearsilver,WillYee/clearsilver,alisonjoe/clearsilver,hczhang/clearsilver,apfeltee/clearsilver,hongruiqi/clearsilver,hczhang/clearsilver,hczhang/clearsilver,hobby/clearsilver,hongruiqi/clearsilver,hljyunxi/clearsilver,manuelluis/clearsilver,manuelluis/clearsilver,manuelluis/clearsilver,hczhang/clearsilver,alisonjoe/clearsilver,manuelluis/clearsilver,hljyunxi/clearsilver,apfeltee/clearsilver,hljyunxi/clearsilver,alisonjoe/clearsilver,WillYee/clearsilver,manuelluis/clearsilver,WillYee/clearsilver,WillYee/clearsilver,hongruiqi/clearsilver,apfeltee/clearsilver,manuelluis/clearsilver,hczhang/clearsilver,hobby/clearsilver,apfeltee/clearsilver,alisonjoe/clearsilver,WillYee/clearsilver,hongruiqi/clearsilver,hongruiqi/clearsilver,hongruiqi/clearsilver,alisonjoe/clearsilver,hczhang/clearsilver,hobby/clearsilver,WillYee/clearsilver,hczhang/clearsilver,WillYee/clearsilver,hobby/clearsilver,hobby/clearsilver,apfeltee/clearsilver,hljyunxi/clearsilver,hljyunxi/clearsilver,WillYee/clearsilver,hljyunxi/clearsilver,hljyunxi/clearsilver,hongruiqi/clearsilver,apfeltee/clearsilver,apfeltee/clearsilver,hobby/clearsilver,hczhang/clearsilver,hongruiqi/clearsilver,alisonjoe/clearsilver,hobby/clearsilver,WillYee/clearsilver,hongruiqi/clearsilver,hljyunxi/clearsilver,manuelluis/clearsilver,hljyunxi/clearsilver,manuelluis/clearsilver