put inclusion of net/zlib.c under "device gzio" instead of "zlib" since right now there is no reason to only include "zlib".
put inclusion of net/zlib.c under "device gzio" instead of "zlib" since right
now there is no reason to only include "zlib".

Requested by: jhb

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase