gdb/

	* breakpoint.h (struct breakpoint_ops) <create_breakpoints_sal>:
	Remove parameter 'lsal'.
	* breakpoint.c (create_breakpoint): Move local variable 'lsal'
	to inner block.  Caller update.
	(base_breakpoint_create_breakpoints_sal): Update.
	(bkpt_create_breakpoints_sal): Likewise.
	(tracepoint_create_breakpoints_sal): Likewise.
	(strace_marker_create_breakpoints_sal): Get 'lsal' from the
	element 0 of vector 'canonical->sals'.
Rearrange --help output.

	* 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.
 top.c (print_gdb_configuration): Explain in output of --configuration
 what does "relocatable" mean.