VTY: pass program name, version and copyright to vty_init()

This enables us to make the VTY completely independent of any
compile-time program-specific information, i.e. one step closer
to using VTY as a shared library from multiple programs.
diff --git a/openbsc/include/vty/command.h b/openbsc/include/vty/command.h
index 38d90b4..ec594ed 100644
--- a/openbsc/include/vty/command.h
+++ b/openbsc/include/vty/command.h
@@ -57,6 +57,10 @@
 	/* Banner configuration. */
 	const char *motd;
 	char *motdfile;
+
+	const char *prog_name;
+	const char *prog_version;
+	const char *prog_copyright;
 };
 
 /* There are some command levels which called from command node. */
@@ -377,7 +381,8 @@
 char *host_config_file();
 void host_config_set(const char *);
 
-void print_version(const char *);
+/* This is called from main when a daemon is invoked with -v or --version. */
+void print_version(int print_copyright);
 
 extern void *tall_vty_cmd_ctx;
 
diff --git a/openbsc/include/vty/vty.h b/openbsc/include/vty/vty.h
index 0441fc5..23430d5 100644
--- a/openbsc/include/vty/vty.h
+++ b/openbsc/include/vty/vty.h
@@ -128,7 +128,7 @@
 }
 
 /* Prototypes. */
-void vty_init (void);
+void vty_init(const char *name, const char *version, const char *copyright);
 int vty_read_config_file(const char *file_name);
 void vty_init_vtysh (void);
 void vty_reset (void);