vendor/BYACC: Remove our local READMEs from the vendor branch.
byacc-
20141006: Adjust some forgotten things on the vendor branch.
* skeleton.c is now yaccpar.c
* New file mstring.c
* Adjust README.DELETED
Import byacc-
20121003.
This is a significant update for yacc that's being maintained by Thomas
Dickey at http://invisible-island.net/byacc/.