Incorporate bsdmake into buildsystem and reorganize libs

lib/libc/stdio/fsetpos.c

@@ -0,0 +1,12 @@
+/*
+ * fsetpos.c - set the position in the file
+ */
+/* $Header$ */
+
+#include	<stdio.h>
+
+int
+fsetpos(FILE *stream, fpos_t *pos)
+{
+	return fseek(stream, *pos, SEEK_SET);
+}