top.c (print_gdb_configuration): Explain in output of --configuration

what does "relocatable" mean.

gdb/ChangeLog

@@ -1,5 +1,8 @@
 2013-07-06  Eli Zaretskii  <eliz@gnu.org>
 
+	* top.c (print_gdb_configuration): Explain in output of
+	--configuration what does "relocatable" mean.
+
 	* main.c (print_gdb_help): Regroup options in the --help text.
 	See http://sourceware.org/ml/gdb-patches/2013-04/msg00362.html for
 	the relevant discussions.

gdb/top.c

@@ -1241,6 +1241,12 @@ This GDB was configured as follows:\n\
              --without-babeltrace\n\
 "));
 #endif
+    /* We assume "relocatable" will be printed at least once, thus we always
+       print this text.  It's a reasonably safe assumption for now.  */
+    fprintf_filtered (stream, _("\n\
+(\"Relocatable\" means the directory can be moved with the GDB installation\n\
+tree, and GDB will still find it.)\n\
+"));
 }