Update vtree.h from FreeBSD

flint.lnt

@@ -202,7 +202,10 @@
 ///////////////////////////////////////////////////////////////////////
 // <vtree.h>
 
--emacro(801, VRBT_*)		// goto considered bad
+// -emacro(801, VRBT_*)		// goto considered bad
+-emacro(527, VRBT_*)		// unreachable code
+-emacro(740, VRBT_*)		// unusual pointer cast
+-emacro(438, VRBT_*)		// last value assigned not used
 -esym(534, *_VRBT_REMOVE)	// ignore retval
 -esym(534, *_VRBT_INSERT)	// ignore retval
 

tools/import_vtree_from_freebsd.sh

+#
+# 
+
+if [ ! -f vtree.h ] ; then
+	echo "Run from include subdir"
+	exit 1
+fi
+
+if [ ! -f /usr/src/sys/sys/tree.h ] ; then
+	echo "You need a FreeBSD source tree in /usr/src"
+	exit 1
+fi
+
+git diff vtree.h | git apply -R > /dev/null 2>&1 || true
+
+GR=f6e54eb360a78856dcde930a00d9b2b3627309ab
+(cd /usr/src/ && git show $GR:sys/sys/tree.h ) |
+sed -E '
+485a\
+		AN(parent);			\\
+s/_SYS_TREE_H_/_VTREE_H_/
+s/SPLAY/VSPLAY/g
+s/RB_/VRBT_/g
+/(VRBT_FIND|VRBT_NFIND|VRBT_MINMAX)/{
+s/struct name [*]/const struct name */
+s/, struct type [*]/, const struct type */
+}
+/sys\/cdefs/d
+s/__unused/v_unused_/
+s/^        /	/g
+' > _t
+
+diff -uw _t vtree.h
+mv _t vtree.h