Prevent multiple inclusions of logging.h
Prevent multiple inclusions of logging.h

Also provide destructor of QLoggingCategory inline.

Change-Id: Ic12cd0347eddcbfaddbd93ea8e9b9baa3307973f
Reviewed-by: Fawzi Mohamed <7388270c57edd0fabd71d8eb0322d66e3c40e57e@digia.com>

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