Big reformat of sources before unfreeze of master (was: Re: Schedule to switch back to master for feature development)

[René J.V. Bertin]

>> 3) Renaming files into CamesCaseStyle.cpp instead of underscore_style.cpp will break my workflow. You have to expect me to spent at
>> least 2 working days on readjusting my workflow. I'm ok with it, though I would prefer to spend this time on something more useful
>> for Krita.
>
>Well, we can do two things, after we've split up the repositories:
>rename everything to camelcase, or everything to underscores. As
>for me, Qt Creator makes it much easier to work with files that 
>have the same names as the class themselves.

I'd advise against using case filenames, or at least be very attentive not to depend on filename differences that are in case only. This *will* lead to problems on MS Windows and Mac OS X.

R