Update CODING file to reflect that spaces near brackets are not to be used anymore, instead kdelibs style guide is followed for any new code.
I think we need to get rid of the whole section in this case, because the preamble says "Due to historic reasons, the coding style of Marble has one exception to the kdelibs style. That exception is that we use the Qt way of using parenthesis, with a space inside both opening and closing parenthesis. For example" which is wrong now. So I'd remove this section 'Spaces and Parenthesis' entirely.