Bug#800729: please support hppa64 in dpkg-buildflags

[Matthias Klose]

Package: dpkg-dev
Version: 1.18.3
Severity: wishlist

I don't intend to do a new port, however the hppa kernel requires a hppa64 
compiler.
$ dpkg-architecture -ahppa64
dpkg-architecture: error: unknown Debian architecture hppa64, you must specify 
GNU system type, too

please could you add support to make this work? it will simplify the packaging 
of the toolchain.