Leading or trailing white space characters in file names

[Travis Cobbs]

I'm against supporting quoted filenames purely on the basis that they aren't supported by most (any?) current LDraw software. They probably would have been a better solution, had that been done back when spaces first started appearing in filenames in LDraw files, but since things have been the way they are right now for so long, I think giving an official stamp of approval to the behavior as I described is the best thing to do.