tools build is broken on amd64

[Paul Goyette <paul%whooppee.com@localhost>]

With updated sources:

In file included from 
/build/netbsd-local/src/tools/mdsetimage/../../external/gpl3/binutils/usr.sbin/mdsetimage/bin_bfd.c:33:0:
/build/netbsd-local/tools/x86_64/amd64/include/compat/nbtool_config.h:656:0: warning: "PACKAGE_VERSION" redefined
 #define PACKAGE_VERSION "noversion"
 ^
<command-line>:0:0: note: this is the location of the previous definition
/build/netbsd-local/src/tools/mdsetimage/../../external/gpl3/binutils/usr.sbin/mdsetimage/bin_bfd.c:44:17: fatal error: bin.h: No such file or directory
compilation terminated.


+------------------+--------------------------+------------------------+
| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:      |
| (Retired)        | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com   |
| Kernel Developer | 0786 F758 55DE 53BA 7731 | pgoyette at netbsd.org |
+------------------+--------------------------+------------------------+