[texworks] Suggestion for the wiki build page

[Manuel Pégourié-Gonnard]

Hi,

I just built texworks on my Debian Lenny box, and in addition to what's
mentionned on the wiki for Ubuntu build, I also needed to install
libdbus-1-dev and invoke qmake-qt4 as mentionned in a previous post here.

So I suggest that the wiki info for Ubuntu be modified to include
libdbus-1-dev and mention that one may have to invoke qmake as
qmake-qt4, and possibly be renamed Ubuntu/Debian.

Manuel.