quicksilver/Quicksilver — pull request #834 by HenningJ (2012-04-22 15:21:31+00:00)
Title: Reduce the number of compiler warnings

I tried to reduce the number of warnings that crop up while compiling. This number has been raising steadily over time, so by now you wouldn't even notice new ones anymore. While QS still compiles and works even with all those warnings, it is a bad sign to have many warnings. Sometimes a warning may indicate a serious problem and if we don't notice new warnings, we wont catch the really bad ones.

Therefore, I reduced the number of warnings from somewhere around 40 to 14 (I think) on my Mac. In the future I'd like to [amp up the compiler's warning sensitivity and treat warnings like errors](http://programmers.stackexchange.com/a/124574/11941) and not merge anything that adds warnings. But first, reduce the number of warnings at the current warning level to 0 and keep it that way. So this is a step in the right direction.

Something about commit b1915106: For some reason, my IB didn't recognize some of the outlets anymore, even though they were actually there. I think that might have happen when someone with XCode 4 open (and saved) the .xib files. I think @skurfer found some kind of compatibility setting that fixes that, right?