Merge tag '3.3.1'

diff --cc modules/core/include/opencv2/core/version.hpp
index ca46377,3847da2..0a5bd53
--- 1/modules/core/include/opencv2/core/version.hpp
--- 2/modules/core/include/opencv2/core/version.hpp
+++ b/modules/core/include/opencv2/core/version.hpp
@@@ -52,8 -52,8 +52,8 @@@
  
  #define CV_VERSION_MAJOR    3
  #define CV_VERSION_MINOR    3
- #define CV_VERSION_REVISION 0
+ #define CV_VERSION_REVISION 1
 -#define CV_VERSION_STATUS   ""
 +#define CV_VERSION_STATUS   "-dev"
  
  #define CVAUX_STR_EXP(__A)  #__A
  #define CVAUX_STR(__A)      CVAUX_STR_EXP(__A)