Applied all fixes related to translating C to C++ code

Also fixed some typos and code alignment
Also adapted tutorial CPP samples
Fixed some identation problems

samples/cpp/distrans.cpp

@@ -128,7 +128,7 @@ int main( int argc, const char** argv )
         // Call to update the view
         onTrackbar(0, 0);
 
-        int c = cvWaitKey(0) & 255;
+        int c = waitKey(0) & 255;
 
         if( c == 27 )
             break;