target.h, remote-es.c, remote-nindy.c: Don't set baud rate if
baud_rate is -1. Remove sr_get_baud_rate and sr_set_baud_rate;
just use the global variable itself. When printing baud rate,
don't print a baud rate if baud_rate is -1.
* remote.c, remote-udi.c, remote-utils.h: Let target.h take care of
declaring these. Those random externs all over are error prone.
* Move "set remotebaud" from remote-utils.c to main.c to it applies
to remote.c as well.
* xcoffread.c (xcoff_symfile_read), coffread.c (coff_symfile_read):
Sort symtabs for this objfile only, not for all objfiles.
* symfile.c, symfile.h (sort_all_symtab_syms): Remove; no longer used.
remove #include "remote-utils.h". This makes it possible to build
GDB without remote-utils.c. Also, move setting of remote_debug
into main, so that all remote*.c files can use it (not just the
serial line ones). And, make baud_rate be an int.
* remote-udi.c: Change kiodebug to remote_debug.
* remote-utils.c: Move setting of baud rate and debug into main.c.
* remote-utils.h: Redefine sr_{get set}_debug and sr_{get set}_baud
to use baud_rate and remote_debug globals for compatibility.
* remote.c: Use remote_debug and baud_rate globals directly,
instead of sr_ functions, so that we don't need to load
remote-utils.c.
