Old-style format of LINGUAS makes @INTLTOOL_DESKTOP_RULE@ inefficient
Recent versions of intltool require the format of po/LINGUAS to be one language per line, like
ar
bg
fr
gl
...
It seems that the tarball of 0.11.2 was bootstrapped with 0.36.2 while po/LINGUAS was kept old-style. This results in merging only the Lithuanian (lt) translation in gajim.desktop. For details, see the sub `gather_po_files' in intltool-merge, which was enhanced a bit since 0.35. A simple reformatting of po/LINGUAS fixes this problem.