The goal is to avoid the use of libmusl for dns resolution because it
seems to be broken, at least in our infra.

The latest version no longer provides 'catchsegv'

shellcheck is a .sh script formatter

Better support of small files -> they are completely read before sending anything to the bus
Better error support

Two new settings:

- 'small-file-size': size in megabytes under which a file is completely read before
  sending to the bus, ie size under which no on-the-fly emission is done
- 'stream-buffer-size': size in megabytes of the buffer used when sending to the
  bus while reading a remote file. Minimum size is 3.