In build-svn-deps-win.pl properly cleanup neon dir.
In build-svn-deps-win.pl properly cleanup neon dir.

* tools/dev/build-svn-deps-win.pl
  (clean_structure): Remove neon dir if it exists.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1501662 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion