Note that this enables the backtracking extension, which we had previously left disabled.
PR: 244149, 269425
Sponsored by: Klara, Inc.
Differential Revision: https://reviews.freebsd.org/D38421
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