Specify the 100000-byte transaction size limit (pre-Overwinter).
Specify the 100000-byte transaction size limit (pre-Overwinter).

Signed-off-by: Daira Hopwood <cd7d43d5556a38ce626d53826fddc46adc597539@jacaranda.org>

zcash/zips,zcash/zips,zcash/zips,zcash/zips