add multiformat output to fimgfx

tools/Makefile

@@ -33,7 +33,8 @@ fimgops:		fimgops.c  $(DEPS)
 	gcc $(COPT) $< ../libfloatimg.a -o $@
 
 fimgfx:		fimgfx.c  $(DEPS)
-	gcc $(COPT) $< ../libfloatimg.a -lm -o $@
+	gcc $(COPT) $< ../libfloatimg.a 		\
+	-ltiff -lpnglite  -lcfitsio -lm -o $@
 
 fimghalfsize:		fimghalfsize.c  $(DEPS)
 	gcc $(COPT) $< ../libfloatimg.a -lm -o $@

tools/fimgfx.c

@@ -262,8 +262,8 @@ switch (action) {
 
 	}
 
-// foo = fimg_export_picture(&dest, dstfname, 0);
-foo = fimg_dump_to_file(&dest, dstfname, 0);
+foo = fimg_export_picture(&dest, dstfname, 0);
+// foo = fimg_dump_to_file(&dest, dstfname, 0);
 if (foo) {
 	fprintf(stderr, "dumping datas to file '%s' give us a %d\n",
 						dstfname,	foo);