Use room jid instead of user jid in invitations.
Use room jid instead of user jid in invitations.

Otherwise the invitee got invited into a "room" with a jid equal to his
one.

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