Add arm64 support to cputable

[guillem@debian.org:
 - Change config.guess regex to not match on aarch64_be. ]

Closes: #672408

Signed-off-by: Guillem Jover <guillem@debian.org>

cputable

@@ -22,6 +22,7 @@ alpha		alpha		alpha.*			64	little
 amd64		x86_64		x86_64			64	little
 armeb		armeb		arm.*b			32	big
 arm		arm		arm.*			32	little
+arm64		aarch64		aarch64			64	little
 avr32		avr32		avr32			32	big
 hppa		hppa		hppa.*			32	big
 m32r		m32r		m32r			32	big

debian/changelog

@@ -20,6 +20,8 @@ dpkg (1.16.4) UNRELEASED; urgency=low
   * Remove deprecated support for PGP style signing command interface from
     dpkg-buildpackage.
   * Remove obsolete --udeb dpkg-scanpackages option.
+  * Add arm64 support to cputable. Closes: #672408
+    Thanks Wookey <wookey@wookware.org>.
 
   [ Updated man page translations ]
   * German (Helge Kreutzmann).