Fixed problem with Makefile calling emacs rather than using EMACS variable

src/Makefile

@@ -158,7 +158,7 @@ $(TARGET-EL) lyskom-all-$(CLIENTVERSION).el: \
 	cat $^ >$@
 
 %-help.el: help-%.xml
-	emacs -batch -l help-compile.el $^ -f lyskom-help-compile-to-el
+	$(EMACS) -batch -l help-compile.el $^ -f lyskom-help-compile-to-el
 
 lyskom-%-$(CLIENTVERSION).el: $(HEADER) %-strings.el $(SOURCES)
 	cat $^ >$@