These are amalgamated into miniaudio.h now and are no longer required
in the extras folder.

This also changes the order of parameters to be consistent with the new
standard for channel maps.

  * Fix an error when _MM_DENORMALS_ZERO_MASK or _MM_FLUSH_ZERO_MASK is
    not supported.

  * Fix compilation errors with TCC.

With this change, support for preallocation has been added and the
dependency on MA_MAX_CHANNELS has been removed.

This commit makes preallocation mandatory for custom resamplers.