Log Message:
+ Teach the readline buildlink3.mk and builtin.mk files to determine
  the correct terminal library that must be linked along with -lreadline.
  On NetBSD, this is -ltermcap.  On Linux, this should be either -ltinfo
  or -lcurses.  On Solaris, this should be -lcurses.

+ Add a "termlib" dependency to the devel/readline package that allows
  for linking against -lcurses.  Bump the PKGREVISON to 1.