Make improvements

- Expand redbean UNIX module
- Expand redbean documentation
- Ensure Lua copyright is embedded in binary
- Increase the PATH_MAX limit especially on NT
- Use column major sorting for linenoise completions
- Fix some suboptimalities in redbean's new UNIX API
- Figured out right flags for Multics newline in raw mode

libc/fmt/strerror.c

@@ -23,9 +23,9 @@
  * Converts errno value to string non-reentrantly.
  * @see strerror_r()
  */
-noasan char *strerror(int err) {
+char *strerror(int err) {
   if (IsTiny()) {
-    return firstnonnull(strerror_short(err), "EUNKNOWN");
+    return firstnonnull(strerrno(err), "EUNKNOWN");
   } else {
     _Alignas(1) static char buf[512];
     strerror_r(err, buf, sizeof(buf));