Adjusting the stack for after it enters the virtual machine

It may cause broken reference count numbers.

Remove code duplication.

Extend the Cygwin CI time limit to 15 minutes.

Get object properties after `mrb_get_args()`

Since they are basically duplicated functionality. `mrb_as_float` is now
a macro defined using `mrb_ensure_float_type`; #5620

It should only call `to_f` for Rational and Complex numbers.
Ref #5540 #5613 #5620

That reduce memory consumption by iv/mt tables.

The main reason for failure is to exceed the time limit, and even when it succeeds, there is less than a minute left.
The 10-minute time limit seems to be too short.

ref. #5613.

I mentioned in #5540 that there was no reentrant to the virtual machine, but in fact it was still a possibility at that point.
Also, the variable `ci` needs to be recalculated at the same time.

ref. #5613

I checked with Valgrind, and the methods that can cause use-after-free are `Array#rotate`, `Array#rotate!`, and `String#byteslice`.
Since `String#rindex` uses `RSTRING_LEN()` indirectly inside the function, no reference to the out-of-bounds range is generated.

Since `mrb_to_integer` and `mrb_to_float` does not convert the object
but checks types, they are named so by historical reason. We introduced
properly named functions.

This commit obsoletes the following functions:

* mrb_to_integer()
* mrb_to_int()
* mrb_to_float()

Use `mrb_ensure_int_type()` instead for the first 2 functions. Use
`mrb_ensure_float_type()` for the last.

mruby have removed `to_int` implicit conversion, so `mrb_to_integer`
should not call `to_i` for conversion.

The `ARY_PTR` and `ARY_LEN` may be modified in `mrb_get_args`.

Fix build error and refine definition of `ssize_t` on MSVC.

Fix word casing in the README

pre-commit autoupdate

https://pre-commit.com/#pre-commit-autoupdate

Changed `Actual` to `actual` mid sentence

Fix summary typo for `mrbgems/mruby-compar-ext`

Allow void expression on some places e.g. right hand of `rescue`
modifier. In addition, checks added on some places, e.g. left hand of
logical operators.

build(deps): bump github/super-linter from 4.8.4 to 4.8.5

Bumps [github/super-linter](https://github.com/github/super-linter) from 4.8.4 to 4.8.5.
- [Release notes](https://github.com/github/super-linter/releases)
- [Changelog](https://github.com/github/super-linter/blob/main/docs/release-process.md)
- [Commits](https://github.com/github/super-linter/compare/v4.8.4...v4.8.5)

---
updated-dependencies:
- dependency-name: github/super-linter
  dependency-type: direct:production
  update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>

Note that the current implantation only calls `[]=` method. No
performance improvement. Just 2 bytes less byte code per assignment.

Add `bin/mrbc --no-ext-ops` switch

Print error before cleanup in `codegen_error()`