editor: handle property changes to links. Previously, property changes to links caused 'link ' to be prepended to the link destination. Removing a line that prepended it in Revision::set() appears to fix it. In these cases, the "file marked as link, but contains data" warning might be triggered. This should be safe, so it's lowered to a note and the language made less conclusive. In order to test this, extra revisions are added to the 'symlinks.svndump' fixture. As one of the new revisions add a link that points to 'link to this', a check that asserted that link destinations must not start with 'link ' was removed. This change is safe, as the test later on asserts exact equality with the contents of the 'links' dictionary.

function verify_current_revision()
{
    /bin/rm -rf *
    exportcmd="svn export `hg svn info 2> /dev/null | grep '^URL: ' | sed 's/URL: //'`@`hg svn info | grep ^Revision | sed 's/.*: //;s/ .*//'` . --force"
    `echo $exportcmd` > /dev/null
    x=$?
    if [[ "$x" != "0" ]] ; then
        echo $exportcmd
        echo 'export failed!'
        return 255
    fi
    if [[ "`hg st | wc -l | python -c 'import sys; print sys.stdin.read().strip()'`" == "0" ]] ; then
        return 0
    else
        if [[ $1 != "keep" ]] ; then
            revert_all_files
        fi
        return 1
    fi
}

function revert_all_files()
{
    hg revert --all
    hg purge
}