Where did snd_pcm_parse_control_id() go?

[GitHub issues - opened]

alsa-project/alsa-lib issue #186 was opened from Saur2000:

It seems `snd_pcm_parse_control_id()` was made private in 1.2.5 without any prior deprecation. It is still present in `pcm_external.h`, and our code now fails to link with:

```
ld: src/plugin_control.o: in function `plugin_control_load_user_control':
src/plugin_control.c:254: undefined reference to `snd_pcm_parse_control_id'
```

What are we supposed to use instead?
And why is the function still in the header file if it is not in the library?

Issue URL     : https://github.com/alsa-project/alsa-lib/issues/186
Repository URL: https://github.com/alsa-project/alsa-lib