Add target_ops argument to to_terminal_init

Add target_ops argument to to_terminal_init

2014-02-19  Tom Tromey  <tromey@redhat.com>

	* target.h (struct target_ops) <to_terminal_init>: Add argument.
	(target_terminal_init): Add argument.
	* target.c (debug_to_terminal_init): Add argument.
	(update_current_target): Update.
	* inflow.c (terminal_init_inferior): Add 'self' argument.
	* inferior.h (terminal_init_inferior): Add 'self' argument.
	* go32-nat.c (go32_terminal_init): Add 'self' argument.
	* gnu-nat.c (gnu_terminal_init_inferior): Add 'self' argument.