New review comment by paper42 on void-packages repository

https://github.com/void-linux/void-packages/pull/38412#discussion_r944937694

Comment:
build still fails with even without this autoconf update:
```
pywatchman/bser.c:31:10: fatal error: Python.h: No such file or directory                                                                         
   31 | #include <Python.h>                                                                                                                       
      |          ^~~~~~~~~~                                                                                                                       
compilation terminated.
```