Do not build/install the legacy OCamlBrowser tool: it requires a large
port to OCaml 5.5's restructured typedtree and has no upstream 5.5 fix.
The Tk library (labltk/camltk) is unaffected. Drop browser from install.
--- Makefile
+++ Makefile
@@ -84,7 +84,6 @@
 	cd compiler; $(MAKE) install
 	cd jpf; $(MAKE) install
 	cd frx; $(MAKE) install
-	cd browser; $(MAKE) install
 	if test -f lib/labltk.cmxa; then $(MAKE) installopt; else :; fi
 
 install-browser: