pgsql: Fix portability issue in TAP tests of psql for locales

Fix portability issue in TAP tests of psql for locales

Some locales use a comma as decimal separator (like Czech or French),
and psql's 001_basic.pl for \timing was not able to handle that
properly.  This fixes the matching regexes to be able to handle both
comma and dot as possible decimal separators, as per a suggestion from
Andrew Dunstan.

psql tests were the only place with such a portability issue
(check-world passed here with a forced LANG/LANGUAGE).  These tests are
new as of c0280bc, so there is no need for a backpatch.

Reported-by: Pavel Stehule
Discussion: https://postgr.es/m/CAFj8pRBz8iQmd2aOaCLvO-rJY6vZr-h6Q0qvV0J+yb78J7uiaA@mail.gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/ca899d98b4aa50d80df9232c5c6ea9e4038cdf48

Modified Files
--------------
src/bin/psql/t/001_basic.pl | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)