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

tool/viz/bin2asm.c

@@ -28,7 +28,7 @@ int main(int argc, char *argv[]) {
   while ((c = getchar()) != -1) {
     if (col == 0) {
       printf("\t.byte\t");
-      memset(glyphs, 0, sizeof(glyphs));
+      bzero(glyphs, sizeof(glyphs));
     }
     ch = c & 0xff;
     glyphs[col] = kCp437[ch];