Constify some commands in exec.c, plus symbol_file_command

Note that this commit also changes deprecated_file_changed_hook -- not
used in the tree, but Insight will require a (presumably minor)
change.

gdb/ChangeLog
2017-09-27  Tom Tromey  <tom@tromey.com>

	* symfile.c (symbol_file_command): Constify.
	* gdbcore.h (deprecated_file_changed_hook): Constify.
	* exec.c (deprecated_file_changed_hook, exec_file_command)
	(file_command): Constify.
	* defs.h (symbol_file_command): Constify.

1 files changed, 1 insertions, 1 deletions

diff --git a/gdb/defs.h b/gdb/defs.h
index 077a816..cf59602 100644
--- a/gdb/defs.h
+++ b/gdb/defs.h
@@ -298,7 +298,7 @@ EXTERN_C char *re_comp (const char *);
 
 /* From symfile.c */
 
-extern void symbol_file_command (char *, int);
+extern void symbol_file_command (const char *, int);
 
 /* * Remote targets may wish to use this as their load function.  */
 extern void generic_load (const char *name, int from_tty);