[RFA] Don't talk about ptrace when there's none

[Eli Zaretskii]

When GDB cannot insert breakpoints or watchpoints, it prints an error
messages that can confuse users of the DJGPP version (since there's no
ptrace, and no ``other processes'' either).

To fix this, I would like to check in the following patches:

2000-04-05  Eli Zaretskii  <eliz@is.elta.co.il>

	* infrun.c (proceed) [__DJGPP__]: Don't talk about ptrace.  Make
	the error message be clear on single-process systems.
	(normal_stop): Likewise.

--- gdb/infrun.c~1	Sat Apr  1 19:41:12 2000
+++ gdb/infrun.c	Wed Apr  5 20:15:04 2000
@@ -1044,9 +1044,13 @@
       int temp = insert_breakpoints ();
       if (temp)
 	{
+#ifndef __DJGPP__
 	  print_sys_errmsg ("ptrace", temp);
+#endif
 	  error ("Cannot insert breakpoints.\n\
-The same program may be running in another process.");
+The same program may be running in another process,\n\
+or you may have requested too many hardware\n\
+breakpoints and/or watchpoints\n.");
 	}
 
       breakpoints_inserted = 1;
@@ -3384,9 +3388,13 @@
   if (breakpoints_failed)
     {
       target_terminal_ours_for_output ();
+#ifndef __DJGPP__
       print_sys_errmsg ("ptrace", breakpoints_failed);
+#endif
       printf_filtered ("Stopped; cannot insert breakpoints.\n\
-The same program may be running in another process.\n");
+The same program may be running in another process,\n\
+or you may have requested too many hardware breakpoints\n\
+and/or watchpoints.\n");
     }
 
   if (target_has_execution && breakpoints_inserted)