MacOS 13 has changed its version of `man` to an version that doesn't
properly support `man -w` (without arguments). In order to workaround
this we simply fallback to $MANPATH.

Fixes #20579

refactor: lua2dox

refactor: explicitly convert HANDLE to intptr_t for _open_osfhandle()

Problem:
The first parameter of "_open_osfhandle()" is an intptr_t; however, a HANDLE is passed.
The official documentation of [_open_osfhandle](https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/open-osfhandle) suggests to cast the HANDLE to intptr_t.
MSVC/cl is able to perform an implicit type cast.
However, LLVM/clang-cl will generate an compilation error.

Solution:
Explicitly convert HANDLE to intptr_t for _open_osfhandle().

build(deps): disable shared library for libvterm

Problem:
Cannot build both static and share libraries for libvterm under Windows.
The static and shared library would have the same name "vterm.lib", thus there would be multiple rules to build the same target.

Solution:
Disable shared library for libvterm.

This makes it possible to use Ninja on Windows to build dependencies (2x speedup!).
But not for Release builds yet.

Co-authored-by: Wei Tang <gauchyler@uestc.edu.cn>

vim-patch:8.2.{1465,2184,2670,2671},9.0.{0712,partial:0715}