Cleaning up dangling whitespace

Hi! The code in the PHP source repo has a lot of random dangling whitespace at the end of lines, which looks sloppy and produces some weird effects in diffs because some editors auto-clean it and some do not. I'd like to clean it up (it's easy to do automatically) in master, but this produces a big patch that may also create some conflicts with existing pull reqs (easily resolved, but still). So, I'd like to ask if there are any objections to such cleanup? If not, then I'll do it, probably next weekend. -- Stas Malyshev smalyshev@gmail.com