C++: Highlight argument to gcc's #include_next extension properly
C++: Highlight argument to gcc's #include_next extension properly

Change-Id: I90097e11689fbbb964fc4344a1e3ba60c718a1cf
Reviewed-by: Nikolai Kosjar <9571db158ca61a0d070db010803474231fa0cbab@digia.com>

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