Status refresh for files does unnecessary work that significantly reduces...

Status refresh for files does unnecessary work that significantly reduces performance on large projects (bug 473026)
https://bugs.eclipse.org/bugs/show_bug.cgi?id=473026

git-svn-id: https://dev.eclipse.org/svnroot/technology/org.eclipse.subversive/trunk@21491 ee007c2a-0a25-0410-9ab9-bf268980928c