Update to byacc 20140715 (only concerns regression tests being fixed)
Directly use regression test from upstream

PR: 191020
Submitted by: gcooper ([email protected])

Update to byacc 20140409
Among all the modifications, this new byacc also solves a 14 year old bug [1]

PR: bin/23254 [1]
Submitted by: [email protected] [1]
MFC after: 3 weeks