Add debug redirect option

Currently, when logging is enabled, output will be sent to both a
logfile and standard terminal output.  The redirect option sends output
only to the logfile.  This includes all debug output.

Add the option to redirect debug output seperately to normal
output, using the cli command:

  set logging debugredirect on

By setting this and enabling logging, all output and debug will
be sent to the logfile.  The user will still see all output but
no debug output.

This causes a change in behaviour for anyone currently using
logging redirect, as now only output will be redirected.  Users
will have to issue the additional command above to also redirect
debug.

Expand ui-redirect.exp cover the changes.

gdb/ChangeLog:

	* cli/cli-interp.c (struct saved_output_files): Add saved entry.
	(cli_interp_base::set_logging): Check debug_redirect.
	* cli/cli-interp.h (set_logging): Add debug_redirect parameter.
	* cli/cli-logging.c (debug_redirect): Add static variable.
	(pop_output_files): Add default param.
	(handle_redirections): Print debug setting.
	(show_logging_command): Likewise.
	(_initialize_cli_logging): Add debugredirect command.
	* interps.c (current_interp_set_logging): Add debug_redirect
	parameter.
	* interps.h (set_logging): Add debug_redirect parameter.
	(current_interp_set_logging): Likewise.
	* mi/mi-common.h: Likewise.
	* mi/mi-interp.c (mi_interp::set_logging): Likewise.

gdb/testsuite/ChangeLog:

	* gdb.base/ui-redirect.exp: Add debug redirect tests.

1 files changed, 7 insertions, 3 deletions

diff --git a/gdb/interps.h b/gdb/interps.h
index 1bdc56c..7cdb4d9 100644
--- a/gdb/interps.h
+++ b/gdb/interps.h
@@ -61,7 +61,8 @@ public:
   /* Provides a hook for interpreters to do any additional
      setup/cleanup that they might need when logging is enabled or
      disabled.  */
-  virtual void set_logging (ui_file_up logfile, bool logging_redirect) = 0;
+  virtual void set_logging (ui_file_up logfile, bool logging_redirect,
+			    bool debug_redirect) = 0;
 
   /* Called before starting an event loop, to give the interpreter a
      chance to e.g., print a prompt.  */
@@ -141,9 +142,12 @@ extern int current_interp_named_p (const char *name);
    interpreter should configure the output streams to send output only
    to the logfile.  If false, the interpreter should configure the
    output streams to send output to both the current output stream
-   (i.e., the terminal) and the log file.  */
+   (i.e., the terminal) and the log file.  DEBUG_REDIRECT is same as
+   LOGGING_REDIRECT, but for the value of "set logging debugredirect"
+   instead.  */
 extern void current_interp_set_logging (ui_file_up logfile,
-					bool logging_redirect);
+					bool logging_redirect,
+					bool debug_redirect);
 
 /* Returns the top-level interpreter.  */
 extern struct interp *top_level_interpreter (void);