Debugger: Restrict use of system GDB pretty printer to version 7.4
Debugger: Restrict use of system GDB pretty printer to version 7.4

Reduce compatibility issues e.g. on Mac. The previous versions
are not working well anyway.

Change-Id: If6cc7c1d4a85300d9bf054966216b52b35c0d1f2
Reviewed-by: hjk <f81b91af79013637d070c18d38a75b90eaae8ba3@nokiamail.com>

danimo/qt-creator,Distrotech/qtcreator,AltarBeastiful/qt-creator,richardmg/qtcreator,farseerri/git_code,maui-packages/qt-creator,Distrotech/qtcreator,farseerri/git_code,malikcjm/qtcreator,farseerri/git_code,darksylinc/qt-creator,martyone/sailfish-qtcreator,duythanhphan/qt-creator,kuba1/qtcreator,duythanhphan/qt-creator,kuba1/qtcreator,AltarBeastiful/qt-creator,malikcjm/qtcreator,maui-packages/qt-creator,danimo/qt-creator,kuba1/qtcreator,omniacreator/qtcreator,omniacreator/qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,colede/qtcreator,omniacreator/qtcreator,kuba1/qtcreator,colede/qtcreator,martyone/sailfish-qtcreator,malikcjm/qtcreator,colede/qtcreator,farseerri/git_code,amyvmiwei/qt-creator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,maui-packages/qt-creator,duythanhphan/qt-creator,xianian/qt-creator,richardmg/qtcreator,martyone/sailfish-qtcreator,danimo/qt-creator,xianian/qt-creator,farseerri/git_code,colede/qtcreator,AltarBeastiful/qt-creator,danimo/qt-creator,Distrotech/qtcreator,darksylinc/qt-creator,Distrotech/qtcreator,duythanhphan/qt-creator,colede/qtcreator,xianian/qt-creator,darksylinc/qt-creator,AltarBeastiful/qt-creator,xianian/qt-creator,kuba1/qtcreator,kuba1/qtcreator,maui-packages/qt-creator,maui-packages/qt-creator,omniacreator/qtcreator,duythanhphan/qt-creator,kuba1/qtcreator,richardmg/qtcreator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,Distrotech/qtcreator,malikcjm/qtcreator,danimo/qt-creator,omniacreator/qtcreator,farseerri/git_code,farseerri/git_code,colede/qtcreator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,richardmg/qtcreator,malikcjm/qtcreator,xianian/qt-creator,malikcjm/qtcreator,duythanhphan/qt-creator,martyone/sailfish-qtcreator,darksylinc/qt-creator,danimo/qt-creator,maui-packages/qt-creator,darksylinc/qt-creator,duythanhphan/qt-creator,farseerri/git_code,malikcjm/qtcreator,xianian/qt-creator,amyvmiwei/qt-creator,richardmg/qtcreator,xianian/qt-creator,omniacreator/qtcreator,AltarBeastiful/qt-creator,xianian/qt-creator,darksylinc/qt-creator,Distrotech/qtcreator,richardmg/qtcreator,AltarBeastiful/qt-creator,colede/qtcreator,darksylinc/qt-creator,danimo/qt-creator,maui-packages/qt-creator,darksylinc/qt-creator,kuba1/qtcreator,xianian/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,omniacreator/qtcreator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator,Distrotech/qtcreator,richardmg/qtcreator,danimo/qt-creator