Fix FTBFS due to missing LIBXML_LIBS

Thanks to Francois Andriot
(cherry picked from commit 041713595d)

src/Makefile.am

@@ -33,7 +33,7 @@ tellico_LDADD = ./core/libcore.a ./cite/libcite.a ./fetch/libfetch.a \
 	./commands/libcommands.a -lexslt $(LIB_KFILE) $(LIB_KHTML) $(LIB_KDEUI) $(LIB_KDECORE) $(LIB_QT) \
 	$(LIBSOCKET) $(LIBXSLT_LIBS) $(TAGLIB_LIBS) $(KCDDB_LIBS) $(YAZ_LIBS) $(LIB_KIO) \
 	$(LIB_KABC) $(KCAL_LIBS) $(LDADD_LIBBTPARSE) $(LIB_KNEWSTUFF) $(EXEMPI_LIBS) \
-	$(POPPLER_LIBS) $(LDADD_LIBBARCODE)
+	$(POPPLER_LIBS) $(LDADD_LIBBARCODE) $(LIBXML_LIBS)
 
 EXTRA_DIST = tellicoui.rc tellicorc \
 borrowerdialog.cpp          entryiconview.h\