Add support to release Linux aarch64 wheels

[odidev]

Problem

On aarch64, ‘pip install pyspider’ is giving the below error -

ERROR: Command errored out with exit status 1:
     command: /usr/bin/python3 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-w68_cof2/pycurl/setup.py'"'"'; __file__='"'"'/tmp/pip-install-w68_cof2/pycurl/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-install-w68_cof2/pycurl/pip-egg-info
         cwd: /tmp/pip-install-w68_cof2/pycurl/
    Complete output (22 lines):
    Traceback (most recent call last):
      File "/tmp/pip-install-w68_cof2/pycurl/setup.py", line 235, in configure_unix
        p = subprocess.Popen((self.curl_config(), '--version'),
      File "/usr/lib/python3.8/subprocess.py", line 858, in __init__
        self._execute_child(args, executable, preexec_fn, close_fds,
      File "/usr/lib/python3.8/subprocess.py", line 1704, in _execute_child
        raise child_exception_type(errno_num, err_msg, err_filename)
    FileNotFoundError: [Errno 2] No such file or directory: 'curl-config'

    During handling of the above exception, another exception occurred:

    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-w68_cof2/pycurl/setup.py", line 1017, in <module>
        ext = get_extension(sys.argv, split_extension_source=split_extension_source)
      File "/tmp/pip-install-w68_cof2/pycurl/setup.py", line 673, in get_extension
        ext_config = ExtensionConfiguration(argv)
      File "/tmp/pip-install-w68_cof2/pycurl/setup.py", line 99, in __init__
        self.configure()
      File "/tmp/pip-install-w68_cof2/pycurl/setup.py", line 240, in configure_unix
        raise ConfigurationError(msg)
    __main__.ConfigurationError: Could not run curl-config: [Errno 2] No such file or directory: 'curl-config'
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

Resolution

On aarch64, ‘pip install pyspider’ should download the wheels from PyPI.

@binux and Team, Please let me know your interest in releasing aarch64 wheels. I can help in this.