Doxygen documentation: Fixes obsolete install data when using make in…

…stall. Now fltk.pdf and all potential html files are installed in the fltk docdir.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6443 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

documentation/Makefile

@@ -213,7 +213,7 @@ depend:
 install: $(MANPAGES)
 	echo "Installing documentation files in $(DESTDIR)$(docdir)..."
 	-$(INSTALL_DIR) $(DESTDIR)$(docdir)
-	for file in $(HTMLFILES) $(IMAGEFILES) index.html; do \
+	for file in fltk.pdf html/* ; do \
 		$(INSTALL_DATA) $$file $(DESTDIR)$(docdir); \
 	done
 	echo "Installing man pages in $(DESTDIR)$(mandir)..."