Fixed compilation errors: removed using namespace from hpp file. This led to pulling cv::ACCESS_MASK to global namespace where conflict with the same name in 'windows.h'

Conflicts:
	apps/traincascade/boost.cpp

apps/traincascade/lbpfeatures.cpp

@@ -4,6 +4,8 @@
 #include "lbpfeatures.h"
 #include "cascadeclassifier.h"
 
+using namespace cv;
+
 CvLBPFeatureParams::CvLBPFeatureParams()
 {
     maxCatCount = 256;