Building tree-sitter on Windows within a Cygwin or MSYS2 environment
for MinGW-w64 targets should work. As there's no configure-like step,
the tools have to be specified with:
make CC=x86_64-w64-mingw32-gcc \
AR=x86_64-w64-mingw32-ar \
STRIP=x86_64-w64-mingw32-strip
Useful reference:
[How to build and use DLLs on Windows](https://nullprogram.com/blog/2021/05/31/)
This commit doesn't tag public functions with dllexport or
dllimport. This results in exporting non-static functions visible
between translation units, and generating slightly less efficient code
for calling exported functions from the DLL.
This commit doesn't include support to build libtree-sitter with MSVC or
clang-cl, but generates a libtree-sitter.lib file for MSVC/clang-cl
consumers.