Update chicken scheme to 4.7.0

dev-scheme/chicken/chicken-4.7.0.bep

@@ -0,0 +1,40 @@
+DESCRIPTION="Chicken is a Scheme interpreter and native Scheme to C compiler" 
+HOMEPAGE="http://www.call-cc.org/" 
+SRC_URI="http://code.call-cc.org/releases/4.7.0/chicken-4.7.0.tar.gz"
+CHECKSUM_MD5="9389388fdf04c3c64de29633aae12539"
+REVISION="1"
+STATUS_HAIKU="stable"
+DEPEND=""
+BUILD {
+	cd chicken-4.7.0
+	if [ `gcc -dumpversion | cut -f1 -d.` -eq "2" ];then
+		echo "Removing -fwrapv flag for gcc2 build"
+		sed -i 's/-fwrapv//' Makefile.haiku
+	fi
+	make PLATFORM=haiku PREFIX=`finddir B_COMMON_DIRECTORY` \
+	MANDIR=`finddir B_COMMON_DOCUMENTATION_DIRECTORY`/man/man1 \
+	DOCDIR=`finddir B_COMMON_DOCUMENTATION_DIRECTORY`/doc/chicken \
+	DATADIR=`finddir B_COMMON_DATA_DIRECTORY`/chicken
+	
+}
+
+INSTALL {
+	cd chicken-4.7.0
+	make PLATFORM=haiku PREFIX=`finddir B_COMMON_DIRECTORY` install \
+	MANDIR=`finddir B_COMMON_DOCUMENTATION_DIRECTORY`/man/man1 \
+	DOCDIR=`finddir B_COMMON_DOCUMENTATION_DIRECTORY`/doc/chicken \
+	DATADIR=`finddir B_COMMON_DATA_DIRECTORY`/chicken
+}
+
+TEST {
+	if ! type -p csi > /dev/null;then
+		echo "ERROR: Chicken must be installed before running the test suite"
+		exit 1
+	fi
+	cd chicken-4.7.0
+	make PLATFORM=haiku PREFIX=`finddir B_COMMON_DIRECTORY` check
+}
+
+LICENSE="BSD (2-clause)"
+COPYRIGHT="2008-2011 The Chicken Team
+		2000-2007 Felix L. Winkelmann"