ensure "make check" works for out of source builds
ensure "make check" works for out of source builds

deepak899/qxmpp,kollix/qxmpp,gotomypc/qxmpp,ycsoft/qxmpp,Kaffeine/qxmpp,gotomypc/qxmpp,kollix/qxmpp,LightZam/qxmpp,pol51/QXMPP-CMake,pol51/QXMPP-CMake,kollix/qxmpp,ycsoft/qxmpp,Kaffeine/qxmpp,Ilyatk/qxmpp,olesalscheider/qxmpp,gamenet/qxmpp,KangLin/qxmpp,cccco/qxmpp,KangLin/qxmpp,LightZam/qxmpp,Ilyatk/qxmpp,LightZam/qxmpp,Ilyatk/qxmpp,KangLin/qxmpp,gotomypc/qxmpp,deepak899/qxmpp,Kaffeine/qxmpp,deepak899/qxmpp,gamenet/qxmpp,olesalscheider/qxmpp,olesalscheider/qxmpp,cccco/qxmpp,cccco/qxmpp,pol51/QXMPP-CMake,ycsoft/qxmpp,gamenet/qxmpp