Qt4 : Rename streaminfo => mediainfo

diff --git a/modules/gui/qt4/dialogs/streaminfo.cpp b/modules/gui/qt4/dialogs/mediainfo.cpp
similarity index 100%
rename from modules/gui/qt4/dialogs/streaminfo.cpp
rename to modules/gui/qt4/dialogs/mediainfo.cpp

diff --git a/modules/gui/qt4/dialogs/streaminfo.hpp b/modules/gui/qt4/dialogs/mediainfo.hpp
similarity index 100%
rename from modules/gui/qt4/dialogs/streaminfo.hpp
rename to modules/gui/qt4/dialogs/mediainfo.hpp