(cherry picked from commit b2790973)
(cherry picked from commit f8758da2)

(cherry picked from commit e650d87e)
(cherry picked from commit ca9c52ac)

Fixed a memory leak in cap_dshow.cpp in videoInput::setVideoSettingCamera(). The leak was caused by not releasing an IBaseFilter object created in a call to getDevice(). Tho object is now properly released.

At least this is how it's defined in core/types_c.h

* CSV can contain dir-s and wildcards
* save trained model

The function makes wave correction of a stitched panorama.
Earlier it gave wrong results for panorama made from 1 frame.

added extra warning about the automatic parameter loading for traincascade application when the param.xml file already exists

Somebody forgot to add curly brackets