MERGE: Closes #16461: Wave library should be able to deal with 4GB wav files, and sample rate of 44100 Hz.

Patch by Manuel Pégourié-Gonnard

Also add tests for ordering and hashing.

Also add tests for ordering and hashing.

Patch by Brian Brazil.

Patch by Brian Brazil.

child subprocess.PIPE parent file descriptors on child error prior to
exec().

This would lead to race conditions in multithreaded programs where
another thread opened a file reusing the fd which was then closed out
from beneath it by the errant second close.

child subprocess.PIPE parent file descriptors on child error prior to
exec().

This would lead to race conditions in multithreaded programs where
another thread opened a file reusing the fd which was then closed out
from beneath it by the errant second close.

all together and just include the repr of the data in the exception
itself instead of the useless string "Unknown".

This code path is unlikely to even be possible to take given the
nature of the pipe it gets subprocess data from.

all together and just include the repr of the data in the exception
itself instead of the useless string "Unknown".

This code path is unlikely to even be possible to take given the
nature of the pipe it gets subprocess data from.

happen" print() call into a RuntimeWarning as it should've been in the
first place.  Because nothing should ever cause unexpected stdout output.

happen" print() call into a RuntimeWarning as it should've been in the
first place.  Because nothing should ever cause unexpected stdout output.

used for stdin/stdout/stderr pipes to the child when fork() fails.

used for stdin/stdout/stderr pipes to the child when fork() fails.

when not expected in subprocess.Popen.wait().

not expected in subprocess.Popen.wait().

yet handled by Python to not persist after os.fork() in the child process.

yet handled by Python to not persist after os.fork() in the child process.