Excessive SVN status reloads for updates, revert, commits etc. (bug 473029)

https://bugs.eclipse.org/bugs/show_bug.cgi?id=473029

git-svn-id: https://dev.eclipse.org/svnroot/technology/org.eclipse.subversive/trunk@21493 ee007c2a-0a25-0410-9ab9-bf268980928c