You've interpreted the patch correctly. Unfortunately Windows doesn't include a standard patch utility, or this could all be applied for you. The numbers are the line numbers affected. The < mark the lines in the old file, and the > mark the lines in the new.
I don't have my Windows system available at the moment, so I can't give you my patched files. You may want to write to support@trolltech.com and ask them for pre-patched files. You're paying for support, you might as well use it.
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