* gdbcore.h: New variable gnutarget.

* core.c: Add commands to set and show it.
	* Callers to bfd_*open*: Pass gnutarget instead of NULL as target.
	* environ.c (set_in_environ): For GNUTARGET, use set_gnutarget not
	putenv.

gdb/remote-udi.c

@@ -45,6 +45,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #include "29k-share/udi/udiproc.h"
 #include "gdbcmd.h"
 #include "bfd.h"
+#include "gdbcore.h" /* For download function */
 
 /* access the register store directly, without going through
    the normal handler functions. This avoids an extra data copy.  */