fix KDE3 library search order (fdo#32797)

Use LINKFLAGS instead of STDLIBS, as the latter comes way too late
in the link command and may result in some stray -L/usr/lib getting
before -L$KDEDIR/lib. Since KDE4 libs often tend to be installed
under /usr while KDE3 libs are often somewhere else such as /opt/kde3/lib,
this could cause using wrong libraries.

vcl/util/makefile.mk

@@ -417,7 +417,7 @@ SHL5STDLIBS+= $(XRANDR_LIBS)
 .ENDIF
 .ENDIF
 
-SHL5STDLIBS+=$(KDE_LIBS)
+SHL5LINKFLAGS+=$(KDE_LIBS)
 
 .ENDIF # "$(ENABLE_KDE)" != ""