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/segment_objects.cpp

@@ -95,8 +95,6 @@ int main(int argc, char** argv)
         if( !tmp_frame.data )
             break;
         bgsubtractor(tmp_frame, bgmask, update_bg_model ? -1 : 0);
-        //CvMat _bgmask = bgmask;
-        //cvSegmentFGMask(&_bgmask);
         refineSegments(tmp_frame, bgmask, out_frame);
         imshow("video", tmp_frame);
         imshow("segmented", out_frame);