lib: move compat links from targetdirs to proper makefiles

@@ -42,10 +42,12 @@
 
 .KEEP_STATE:
 
 all : $(LIBS)
 
+install : $(ROOTCOMPATLINKS)
+
 lint : lintcheck
 
 pics/%.o:        $(COMDIR)/%.c
         $(COMPILE.c) -o $@ $<
         $(POST_PROCESS_O)