…ython#126387)

Properly detect float word ordering on Linux (pythongh-125571)

autoconf-archive patch by Dan Amelang.

(cherry picked from commit 26d6277)

Hardcode WASM float word ordering to little endian (pythongh-126387)

(cherry picked from commit 532fc08)

…26429)

Properly detect float word ordering on Linux (gh-125571)

autoconf-archive patch by Dan Amelang.

(cherry picked from commit 26d6277)

Hardcode WASM float word ordering to little endian (gh-126387)

(cherry picked from commit 532fc08)

…26430)

Properly detect float word ordering on Linux (gh-125571)

autoconf-archive patch by Dan Amelang.

(cherry picked from commit 26d6277)

Hardcode WASM float word ordering to little endian (gh-126387)

(cherry picked from commit 532fc08)

…float word order

Before python#126387, if we didn't detect float word order we'd raise the following
configure error:
```
Unknown float word ordering. You need to manually preset
ax_cv_c_float_words_bigendian=no (or yes) according to your system.
```
This puts it back (except for host_cpu arm or wasm).

…float word order

Before python#126387, if we didn't detect float word order we'd raise the following
configure error:
```
Unknown float word ordering. You need to manually preset
ax_cv_c_float_words_bigendian=no (or yes) according to your system.
```
This puts it back (except for host_cpu arm or wasm).

…word order (#126569)

Before #126387, if we didn't detect float word order we'd raise the following
configure error:

    Unknown float word ordering. You need to manually preset
    ax_cv_c_float_words_bigendian=no (or yes) according to your system.

This puts it back (except for ARM or WASM, which as hardcoded).

The original patch:
autoconf-archive/autoconf-archive#279
broke endianness detection on Emscripten. This was fixed in this followup:
autoconf-archive/autoconf-archive#316

We also have worked around the problem by adjusting `configure.ac` in the Python
repo to handle this case:
python/cpython#126387
But it's useful for us to use the upstream autoconf-archive detection so that we
can be completely sure that the fix works in practice.

…ython#126387)

…float word order (python#126569)

Before python#126387, if we didn't detect float word order we'd raise the following
configure error:

    Unknown float word ordering. You need to manually preset
    ax_cv_c_float_words_bigendian=no (or yes) according to your system.

This puts it back (except for ARM or WASM, which as hardcoded).

…ython#126387)

…float word order (python#126569)

Before python#126387, if we didn't detect float word order we'd raise the following
configure error:

    Unknown float word ordering. You need to manually preset
    ax_cv_c_float_words_bigendian=no (or yes) according to your system.

This puts it back (except for ARM or WASM, which as hardcoded).