net/zebra-pj missing autoheader

[Munechika Sumikawa]

Hi Oliver,

> Hi Andy,
> 
> your patch is appreciated. The latest version of bsd.port.pk has:
> 
> USE_AUTOMAKE=		yes
> USE_AUTOHEADER=		yes
> WANT_AUTOCONF_VER=	253

I could not use this knob because execution of aclocal is required
before automake.

> on which ports should standardize. You'll find the documentation
> in /usr/ports/Mk/bsd.port.mk.

It's welcome If you send me a patch to use standardization.

-- Sumikawa