Fix re-routing issue where device inadvertently switches to legacy path after toggling devices. The legacy path (AudioStreamLegacy) has been proven to cause sudden disconnections with no callbacks being called, resulting in no audio. Also, when reading default device, we give the AAUDIO_PERFORMANCE_MODE_LOW_LATENCY hint, allowing for non-legacy path.

Public issue https://github.com/mackron/miniaudio/issues/919

Public issue https://github.com/mackron/miniaudio/issues/919.

ma_context_get_devices and ma_context_enumerate_devices are mutually related
functions.

enumerate_devices's docs refer to get_devices, but get_devices's docs refer to
get_devices by mistake. Change get_devices's docs to refer to enumerate_devices
as intended.

fixing issue: error: implicit conversion turns floating-point number into integer: 'const Float64' (aka 'const double') to 'ma_uint32' (aka 'unsigned int') [-Werror,-Wfloat-conversion]

This reverts the following commits:

d46e19fb
  "PulseAudio: Attempt to fix a deadlock."

61586de2
  "PulseAudio: Default to a blocking main loop."

Public issue https://github.com/mackron/miniaudio/issues/902

This matches the handle added for script processor node devices in #771

Public issue https://github.com/mackron/miniaudio/issues/850

Public issues
  https://github.com/mackron/miniaudio/issues/877
  https://github.com/mackron/miniaudio/issues/881

This is from c89atomic which has been fixed upstream.

Public issue https://github.com/mackron/miniaudio/issues/833

fix typos

Public issue https://github.com/mackron/miniaudio/issues/841