new venti library.

src/libventi/strdup.c

@@ -0,0 +1,18 @@
+#include <u.h>
+#include <libc.h>
+#include <venti.h>
+
+char*
+vtstrdup(char *s)
+{
+	int n;
+	char *ss;
+
+	if(s == nil)
+		return nil;
+	n = strlen(s) + 1;
+	ss = vtmalloc(n);
+	memmove(ss, s, n);
+	return ss;
+}
+