[pushed] Get rid of deprecated_init_ui_hook

[Joel Brobecker <brobecker@adacore.com>]

As demonstrated by Pedro in:
https://www.sourceware.org/ml/gdb-patches/2015-05/msg00095.html

This hook is no longer used, and can therefore be eliminated.

gdb/ChangeLog:

        * defs.h (deprecated_init_ui_hook): Delete.  Remove associated
        comment.
        * top.c (deprecated_init_ui_hook): Delete.
        (gdb_init): Remove handling of deprecated_init_ui_hook.
        * interps.c (clear_interpreter_hooks): Remove handling of
        deprecated_init_ui_hook.
        * main.c (captured_main): Update comment.

Tested on x86_64-linux and pushed.

Thanks!
-- 
Joel

---
 gdb/ChangeLog | 10 ++++++++++
 gdb/defs.h    |  5 -----
 gdb/interps.c |  1 -
 gdb/main.c    |  3 +--
 gdb/top.c     | 14 --------------
 5 files changed, 11 insertions(+), 22 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index dd4bcad..8184af9 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,15 @@
 2015-05-06  Joel Brobecker  <brobecker@adacore.com>
 
+	* defs.h (deprecated_init_ui_hook): Delete.  Remove associated
+	comment.
+	* top.c (deprecated_init_ui_hook): Delete.
+	(gdb_init): Remove handling of deprecated_init_ui_hook.
+	* interps.c (clear_interpreter_hooks): Remove handling of
+	deprecated_init_ui_hook.
+	* main.c (captured_main): Update comment.
+
+2015-05-06  Joel Brobecker  <brobecker@adacore.com>
+
 	* solib.c (_initialize_solib): Add "info dll" alias creation.
 	* windows-nat.c (set_windows_aliases): Delete.
 	(_initialize_windows_nat): Remove deprecated_init_ui_hook
diff --git a/gdb/defs.h b/gdb/defs.h
index eda6741..29bb8c4 100644
--- a/gdb/defs.h
+++ b/gdb/defs.h
@@ -633,10 +633,6 @@ extern int watchdog;
 /* * The name of the interpreter if specified on the command line.  */
 extern char *interpreter_p;
 
-/* If a given interpreter matches INTERPRETER_P then it should update
-   deprecated_init_ui_hook with the per-interpreter implementation.  */
-/* FIXME: deprecated_init_ui_hook should be moved here.  */
-
 struct target_waitstatus;
 struct cmd_list_element;
 
@@ -644,7 +640,6 @@ extern void (*deprecated_pre_add_symbol_hook) (const char *);
 extern void (*deprecated_post_add_symbol_hook) (void);
 extern void (*selected_frame_level_changed_hook) (int);
 extern int (*deprecated_ui_loop_hook) (int signo);
-extern void (*deprecated_init_ui_hook) (char *argv0);
 extern void (*deprecated_show_load_progress) (const char *section,
 					      unsigned long section_sent, 
 					      unsigned long section_size, 
diff --git a/gdb/interps.c b/gdb/interps.c
index 90b5b2d..4c1e6cc 100644
--- a/gdb/interps.c
+++ b/gdb/interps.c
@@ -362,7 +362,6 @@ interp_exec (struct interp *interp, const char *command_str)
 void
 clear_interpreter_hooks (void)
 {
-  deprecated_init_ui_hook = 0;
   deprecated_print_frame_info_listing_hook = 0;
   /*print_frame_more_info_hook = 0; */
   deprecated_query_hook = 0;
diff --git a/gdb/main.c b/gdb/main.c
index 477fd68..aecd60a 100644
--- a/gdb/main.c
+++ b/gdb/main.c
@@ -859,8 +859,7 @@ captured_main (void *data)
   /* Try to set up an alternate signal stack for SIGSEGV handlers.  */
   setup_alternate_signal_stack ();
 
-  /* Initialize all files.  Give the interpreter a chance to take
-     control of the console via the deprecated_init_ui_hook ().  */
+  /* Initialize all files.  */
   gdb_init (gdb_program_name);
 
   /* Now that gdb_init has created the initial inferior, we're in
diff --git a/gdb/top.c b/gdb/top.c
index ddf5415..deb4108 100644
--- a/gdb/top.c
+++ b/gdb/top.c
@@ -172,14 +172,6 @@ char *lim_at_start;
 
 /* Hooks for alternate command interfaces.  */
 
-/* Called after most modules have been initialized, but before taking
-   users command file.
-
-   If the UI fails to initialize and it wants GDB to continue using
-   the default UI, then it should clear this hook before returning.  */
-
-void (*deprecated_init_ui_hook) (char *argv0);
-
 /* This hook is called from within gdb's many mini-event loops which
    could steal control from a real user interface's event loop.  It
    returns non-zero if the user is requesting a detach, zero
@@ -1970,12 +1962,6 @@ gdb_init (char *argv0)
   set_language (language_c);
   expected_language = current_language;	/* Don't warn about the change.  */
 
-  /* Allow another UI to initialize.  If the UI fails to initialize,
-     and it wants GDB to revert to the CLI, it should clear
-     deprecated_init_ui_hook.  */
-  if (deprecated_init_ui_hook)
-    deprecated_init_ui_hook (argv0);
-
   /* Python initialization, for example, can require various commands to be
      installed.  For example "info pretty-printer" needs the "info"
      prefix to be installed.  Keep things simple and just do final
-- 
1.9.1