RFA: fix formatting of 'p' packet register number

[Jim Blandy <jimb@redhat.com>]

2004-10-07  Jim Blandy  <jimb@redhat.com>

	* remote.c (fetch_register_using_p): Construct 'p' packet in a
	manner independent of the host byte order.

Index: gdb/remote.c
===================================================================
RCS file: /cvs/src/src/gdb/remote.c,v
retrieving revision 1.149
diff -c -p -r1.149 remote.c
*** gdb/remote.c	5 Oct 2004 19:52:04 -0000	1.149
--- gdb/remote.c	7 Oct 2004 22:31:11 -0000
*************** fetch_register_using_p (int regnum)
*** 3176,3184 ****
    char regp[MAX_REGISTER_SIZE];
    int i;
  
!   buf[0] = 'p';
!   bin2hex((char *) &regnum, &buf[1], sizeof(regnum));
!   buf[9] = 0;
    remote_send (buf, rs->remote_packet_size);
    if (buf[0] != 0 && buf[0] != 'E') {
       p = buf;
--- 3176,3185 ----
    char regp[MAX_REGISTER_SIZE];
    int i;
  
!   p = buf;
!   *p++ = 'p';
!   p += hexnumstr (p, regnum);
!   *p++ = '\0';
    remote_send (buf, rs->remote_packet_size);
    if (buf[0] != 0 && buf[0] != 'E') {
       p = buf;