Update autotools for new DSO linkage style

Thanks to Francois Andriot for the patch

src/Makefile.am

@@ -19,7 +19,7 @@ ktechlab_LDADD = $(top_builddir)/src/gui/libgui.la \
 	$(top_builddir)/src/mechanics/libmechanics.la $(top_builddir)/src/electronics/libelectronics.la \
 	$(top_builddir)/src/electronics/simulation/libelements.la $(top_builddir)/src/electronics/components/libcomponents.la \
 	$(top_builddir)/src/languages/liblanguages.la $(top_builddir)/src/drawparts/libdrawparts.la \
-	$(top_builddir)/src/core/libcore.la -lkutils -lktexteditor $(LIB_KFILE) $(LIB_TDEPRINT) $(LIB_GPSIM) -lgpsimgui
+	$(top_builddir)/src/core/libcore.la -lkutils -lktexteditor $(LIB_KFILE) $(LIB_TDEPRINT) $(LIB_QT) $(LIB_GPSIM) -lgpsimgui
 
 # which sources should be compiled for ktechlab
 ktechlab_SOURCES = ktechlab.cpp node.cpp connector.cpp itemlibrary.cpp \