m4/: Reformat to match current m4/shell style.
-rw-r--r-- 250 .gitignore
-rw-r--r-- 219 .skelrc
drwxr-xr-x - build
drwxr-xr-x - doc
drwxr-xr-x - licence
drwxr-xr-x - m4
drwxr-xr-x - src