Obsolete members pages get renamed

Some files listing obsolete members end up getting renamed:

rename qt3d/{qt3dextras-obsolete.html => qt3dextras-sub-qt3d-obsolete.html} (100%)
rename qtcanvas3d/{qtcanvas3d-qmlmodule-obsolete.html => qtcanvas3d-qmlmodule-obsolete-obsolete.html} (100%)
rename qtconcurrent/{qtconcurrent-obsolete.html => qtconcurrent-sub-qtconcurrent-obsolete.html} (100%)
rename qtcore/{qt-obsolete.html => qt-sub-qtcore-obsolete.html} (100%)
rename qtmacextras/{qtmac-obsolete.html => qtmac-sub-qtmacextras-obsolete.html} (100%)
rename qtnetwork/{qssl-obsolete.html => qssl-sub-qtnetwork-obsolete.html} (100%)
rename qttestlib/{qtest-obsolete.html => qtest-sub-qttestlib-obsolete.html} (97%)