lib: move compat links from targetdirs to proper makefiles

*** 13,18 ****
  # Copyright 2015 Joyent, Inc.
  #
  
  include ../Makefile.com
  
! install: all $(ROOTLIBS) $(ROOTLINKS)
--- 13,18 ----
  # Copyright 2015 Joyent, Inc.
  #
  
  include ../Makefile.com
  
! install: all $(ROOTLIBS) $(ROOTLINKS) $(ROOTCOMPATLINKS)