COMP: do not use Qt toStdString since it causes runtime issues with VC2010"

Code/Wrappers/QtWidget/otbQtFileSelectionWidget.h

Code/Wrappers/QtWidget/otbQtStringSelectionWidget.h

...QtWidget/otbWrapperQtWidgetComplexInputImageParameter.cxx

...tWidget/otbWrapperQtWidgetComplexOutputImageParameter.cxx

...rappers/QtWidget/otbWrapperQtWidgetDirectoryParameter.cxx

...ers/QtWidget/otbWrapperQtWidgetInputFilenameParameter.cxx

...appers/QtWidget/otbWrapperQtWidgetInputImageParameter.cxx

...s/QtWidget/otbWrapperQtWidgetInputVectorDataParameter.cxx

...rs/QtWidget/otbWrapperQtWidgetOutputFilenameParameter.cxx

...ppers/QtWidget/otbWrapperQtWidgetOutputImageParameter.cxx

.../QtWidget/otbWrapperQtWidgetOutputVectorDataParameter.cxx

...appers/QtWidget/otbWrapperQtWidgetStringListParameter.cxx

Code/Wrappers/QtWidget/otbWrapperQtWidgetStringParameter.cxx