mksysinfo.sh: Define Solaris zone_net_addr_t struct.
mksysinfo.sh: Define Solaris zone_net_addr_t struct.

From Rainer Orth.

R=iant
CC=gofrontend-dev
https://golang.org/cl/225900043

qskycolor/gofrontend,golang/gofrontend,qskycolor/gofrontend,qskycolor/gofrontend,golang/gofrontend,qskycolor/gofrontend,qskycolor/gofrontend,golang/gofrontend,qskycolor/gofrontend,qskycolor/gofrontend,golang/gofrontend