Make improvements

- Add rusage to redbean Lua API
- Add more redbean documentation
- Add pledge() to redbean Lua API
- Polyfill OpenBSD pledge() for Linux
- Increase PATH_MAX limit to 1024 characters
- Untrack sibling processes after fork() on Windows

libc/dns/lookupservicesbyname.c

@@ -56,7 +56,7 @@ int LookupServicesByName(const char *servname, char *servproto,
   const char *path;
   size_t linesize;
   int found, result;
-  char pathbuf[PATH_MAX + 1];
+  char pathbuf[PATH_MAX];
   char *name, *port, *proto, *alias, *comment, *tok;
   if (!(path = filepath)) {
     path = "/etc/services";