7085 add support for "if" and "else" statements in dtrace

*** 18,28 ****
  #
  # CDDL HEADER END
  #
  #
  # Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
! # Copyright (c) 2012 by Delphix. All rights reserved.
  #
  
  LIBRARY = libdtrace.a
  VERS = .1
  
--- 18,28 ----
  #
  # CDDL HEADER END
  #
  #
  # Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
! # Copyright (c) 2011, 2014 by Delphix. All rights reserved.
  #
  
  LIBRARY = libdtrace.a
  VERS = .1
  
*** 36,45 ****
--- 36,46 ----
          dt_decl.c \
          dt_dis.c \
          dt_dof.c \
          dt_error.c \
          dt_errtags.c \
+         dt_sugar.c \
          dt_handle.c \
          dt_ident.c \
          dt_inttab.c \
          dt_link.c \
          dt_list.c \