lib: move compat links from targetdirs to proper makefiles

*** 81,87 ****
--- 81,90 ----
          $(POST_PROCESS_O)
  
  $(DYNLINKLIBDIR)/%: %$(VERS)
          $(INS.liblink)
  
+ $(ROOTCOMPATLINKS):
+         $(RM) $@; $(SYMLINK) $(COMPATLINKTARGET) $@
+ 
  clean:
          $(RM) $(POBJS) $(OBJS) $(PICS) $(CLEANFILES)