lib: move compat links from targetdirs to proper makefiles

@@ -26,6 +26,6 @@
 
 .KEEP_STATE:
 
 all: $(LIBS)
 
-install: all $(ROOTLIBS) $(ROOTLINKS) $(ROOTLINT)
+install: all $(ROOTLIBS) $(ROOTLINKS) $(ROOTLINT) $(ROOTCOMPATLINKS)