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/runtime/ismemtracked.greg.c

@@ -18,7 +18,7 @@
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/runtime/memtrack.internal.h"
 
-bool IsMemtracked(int x, int y) {
+static inline bool IsMemtrackedImpl(int x, int y) {
   unsigned i;
   i = FindMemoryInterval(&_mmi, x);
   if (i == _mmi.i) return false;
@@ -29,3 +29,9 @@ bool IsMemtracked(int x, int y) {
     if (_mmi.p[i].x != _mmi.p[i - 1].y + 1) return false;
   }
 }
+
+bool IsMemtracked(int x, int y) {
+  bool res;
+  res = IsMemtrackedImpl(x, y);
+  return res;
+}