Re: pgsql: Add 'basebackup_to_shell' contrib module.

So ... none of the Windows buildfarm members actually like this
test script.  They're all showing failures along the lines of

not ok 2 - fails if basebackup_to_shell.command is not set: matches

#   Failed test 'fails if basebackup_to_shell.command is not set: matches'
#   at t/001_basic.pl line 38.
#                   'pg_basebackup: error: connection to server at "127.0.0.1", port 55358 failed: FATAL:  SSPI
authenticationfailed for user "backupuser" 
# '
#     doesn't match '(?^:shell command for backup is not configured)'

Does the CI setup not account for this issue?

            regards, tom lane