[Tizen][Runtime] Fix lose symbolic link after update.

Before PR https://github.com/crosswalk-project/crosswalk/pull/1933
we update an application by uninstall and install.

And after this PR update have independent logic, so we will lose
symbolic link when update an application.
Merge pull request #2032 from CooderIan/fix_symbolic_link

[Tizen][Runtime] Fix lose symbolic link after update.