qmake need full path in HEADERS

After http://qt.gitorious.org/qt/qtbase/commit/90387bb4461f46b8c725c55066247fba5fbd152f you have to add the complete path to HEADERS in the .pro file. If not I get warnings that qmake doesn't find the header files, and later problems with that signals are just undefined symbols.

The commit above removes DEPENDPATH from vpath, but maybe INCLUDEPATH should be added instead? Or is this new behavior intended?