Debugger: Trim ABI list for GDB based debuggers
Debugger: Trim ABI list for GDB based debuggers

Do not end up appending to the existing list of ABIs when reinitializing
GDB debuggers.

Task-number: QTCREATORBUG-10642
Change-Id: Ic023f1fa269dbc05c0a44c3acf2cc8dd22f0565c
Reviewed-by: Christian Stenger <accbb51712d7b9c4fb108439d01e716148e5f9e6@digia.com>

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