Debugger: Re-enable thread combo box for core files
Debugger: Re-enable thread combo box for core files

This fixes a regression introduced after 2.5

Task-number: QTCREATORBUG-9110
Change-Id: I72450d7c6797910e789f78c7478fc7dd3d6f6228
Reviewed-by: Eike Ziller <c142da16c73a95a82d35191bcc55b22835617128@digia.com>

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