IDocument: Reduce size of IDocument structure by reordering elements
IDocument: Reduce size of IDocument structure by reordering elements

On 64bit machines it should now have 48byte instead of 64.
Change-Id: I7a171864244e8faf26a2cf3c32abe9e705837fa3
Reviewed-by: Eike Ziller <c142da16c73a95a82d35191bcc55b22835617128@theqtcompany.com>

martyone/sailfish-qtcreator,xianian/qt-creator,kuba1/qtcreator,Distrotech/qtcreator,AltarBeastiful/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator,Distrotech/qtcreator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,Distrotech/qtcreator,danimo/qt-creator,AltarBeastiful/qt-creator,kuba1/qtcreator,danimo/qt-creator,AltarBeastiful/qt-creator,kuba1/qtcreator,xianian/qt-creator,amyvmiwei/qt-creator,Distrotech/qtcreator,danimo/qt-creator,amyvmiwei/qt-creator,kuba1/qtcreator,Distrotech/qtcreator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,xianian/qt-creator,AltarBeastiful/qt-creator,AltarBeastiful/qt-creator,kuba1/qtcreator,xianian/qt-creator,xianian/qt-creator,xianian/qt-creator,danimo/qt-creator,amyvmiwei/qt-creator,danimo/qt-creator,Distrotech/qtcreator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,Distrotech/qtcreator,kuba1/qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,xianian/qt-creator,danimo/qt-creator,kuba1/qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator