Bug#887049: zita-convolver: consider use arch-bits=32/64 fmt in symbol file

[YunQiang Su]

Package: src:zita-convolver
Version: 3.1.0-6

https://manpages.debian.org/unstable/dpkg-dev/dpkg-gensymbols.1.en.html
New version of dpkg support a new syntax like:
   (arch-bits=32)32bit_specific_symbol at Base 1.0
   (arch-bits=64)64bit_specific_symbol at Base 1.0

Please consider use this.
I am working on porting Debian to some new architectures.
This syntax seems great for new ports.

-- 
YunQiang Su