MFC: r313105, r313106

Update byacc to 20170201.

MFC r306691,310036:

Merge byacc 20161202.

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Merge byacc 20160324.

Merge byacc 20150711.

Update to 20140422

Import byacc 20140101 which imports %token-table from bison allowing to build ntpd

Merge byacc 20130925

2 changes:
- Increase default stack-size so that used to be our default stack-size prior byacc import
- fix two loop-limits found by clang 3.3

Update byacc to 20130304

Import byacc from invisible island, it brings us lots of compatibilities with
bison, keeping full compatibility with our previous yacc implementation.

Also bring the ability to create reentrant parser

This fix bin/140309 [1]

PR: bin/140309 [1]
Submitted by: Philippe Pepiot <ksh@philpep.org> [1]
Approved by: des (mentor)
MFC after: 1 month

Import byacc 20120115

Approved by: des (mentor)