ballard has its own msie6.css
css fixes for ie6

the main concern here is to make RT work and not so ugly on ie6.
most changes are plain position fixes, but here is the weird one:

though we hide ".message-stanza.closed" in history-folding.css,
ie6 hides "Show quoted text" span too, which is actually
".message-stanza-folder.closed", so I had to force the display
in msie6.css like:

    span.message-stanza-folder {
        display: inline !important;
    }
css fix to make extra buttons visible on ie6

this includes "Clear All", "Check All" buttons in /Search/Bulk.html
Merge branch '4.0/ie6-css-fix' into 4.0-trunk

Updated license tags