Make pg_bsd_indent add a space between comma and period.

Make pg_bsd_indent add a space between comma and period.

Formatting of variadic functions and struct literals with named fields
used to be ugly due to pg_bsd_indent treating period as always being a
binary operator.  After a comma, it's not that, so insert a space.

Bump pg_bsd_indent's version so that people who use out-of-tree
copies will know they need to update.  (This also covers the other
pg_bsd_indent behavioral change introduced in a3e6beba6.)

Author: Andreas Karlsson <andreas@proxel.se>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/c3327be8-09e2-46a1-88b4-228a339d6916@proxel.se