Use Bison in the build instead of byacc.

This fixes the issue of '$()' (for ``) not being parsed correctly.

PR:		101230
Submitted by:	bf2006a@yahoo.com

shells/bash/Makefile

@@ -9,7 +9,7 @@
 PORTNAME=		bash
 PATCHLEVEL=		10
 PORTVERSION=		4.0.${PATCHLEVEL:S/^0//g}
-PORTREVISION?=		1
+PORTREVISION?=		2
 CATEGORIES=		shells
 MASTER_SITES=		${MASTER_SITE_GNU:S/$/:bash/} \
 			ftp://ftp.cwru.edu/pub/%SUBDIR%/:faq
@@ -44,6 +44,7 @@ MAN1=			bash.1 bashbug.1
 INFO=			bash
 
 GNU_CONFIGURE=		yes
+USE_BISON=		build
 
 .if !defined(NOPORTDOCS)
 .if !defined(WITH_INCLUDED_FAQ)
@@ -92,7 +93,7 @@ LDFLAGS+=		-L${LOCALBASE}/lib
 
 CONFIGURE_ENV=		CPPFLAGS="${CPPFLAGS}" \
 			LDFLAGS="${LDFLAGS}" \
-			YACC="${YACC}"
+			YACC="bison"
 
 .include <bsd.port.pre.mk>
 
@@ -128,6 +129,9 @@ post-install:
 	@${SETENV} PKG_PREFIX="${PREFIX}" PKG_DESTDIR="${DESTDIR}" \
 		${SH} ${PKGINSTALL} ${PKGNAME} POST-INSTALL
 
+regress: build
+	cd ${WRKSRC}; ${SETENV} ${MAKE_ENV} ${MAKE} ${MAKE_ARGS} test
+
 cklatest:
 	-ncftpls \
 	    ftp://ftp.cwru.edu/pub/${PORTNAME}/${PORTNAME}-${PORTVERSION:C/\.[0-9a-z]*$//}-patches/ \