<macro name="author" >
<names variable="author" suffix=". " >
<text text-case="uppercase" >
<name sort-separator=" " initialize-with="" name-as-sort-order="all" delimiter=", " delimiter-precedes-last="always" >
</names>
</macro>

I had to copy this out of the page code (use < code > < /code> if you're in html mode or use the text mode to post xml on the forum) but that's roughly what you have?
put text-case="uppercase" in the name string, right before sort-separator.
<name text-case="uppercase" sort-sparator=" " ....