Updated bison to 2.4.3, this required adding in the recent gnulib patch to binary-io.h from Eric Blake.

sys-devel/bison/bison-2.4.3.bep

@@ -0,0 +1,25 @@
+DESCRIPTION="bison - A yacc-compatible parser generator" 
+HOMEPAGE="http://www.gnu.org/software/bison/bison.html" 
+SRC_URI="http://ftp.gnu.org/gnu/bison/bison-2.4.3.tar.gz"
+CHECKSUM_MD5="ea45c778b36bdc7a720096819e292a73"
+REVISION="2"
+STATUS_HAIKU="stable"
+DEPEND=""
+BUILD {
+	cd bison-2.4.3
+	./configure --prefix=/boot/common --disable-nls
+	make
+}
+
+INSTALL {
+	cd bison-2.4.3
+	make install
+}
+
+TEST {
+	cd bison-2.4.3
+	make check
+}
+
+LICENSE="GNU GPL v3"
+COPYRIGHT="1992-2010 Free Software Foundation, Inc."