Debugger: Delay matplot process initialization
Debugger: Delay matplot process initialization

Reduces costs in case the feature is not requested.

Change-Id: I66da6f256baaec6ef9d40bc135942551d58e83da
Reviewed-by: Christian Stenger <accbb51712d7b9c4fb108439d01e716148e5f9e6@theqtcompany.com>

martyone/sailfish-qtcreator,xianian/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,Distrotech/qtcreator,Distrotech/qtcreator,martyone/sailfish-qtcreator,xianian/qt-creator,kuba1/qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,kuba1/qtcreator,xianian/qt-creator,Distrotech/qtcreator,martyone/sailfish-qtcreator,kuba1/qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,danimo/qt-creator,danimo/qt-creator,Distrotech/qtcreator,xianian/qt-creator,xianian/qt-creator,Distrotech/qtcreator,martyone/sailfish-qtcreator,kuba1/qtcreator,danimo/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator,kuba1/qtcreator,Distrotech/qtcreator,kuba1/qtcreator,danimo/qt-creator,danimo/qt-creator,Distrotech/qtcreator,kuba1/qtcreator,kuba1/qtcreator,danimo/qt-creator,danimo/qt-creator