pgsql: Don't start to stream after pg_receivexlog --create-slot.

Don't start to stream after pg_receivexlog --create-slot.

Immediately starting to stream after --create-slot is inconvenient in a
number of situations (e.g. when configuring a slot for use in
recovery.conf) and it's easy to just call pg_receivexlog twice in the
rest of the cases.

Author: Michael Paquier
Discussion: CAB7nPqQ9qEtuDiKY3OpNzHcz5iUA+DUX9FcN9K8GUkCZvG7+Ew(at)mail(dot)gmail(dot)com
Backpatch: 9.5, where the option was introduced

Branch
------
REL9_5_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/86baf3c24dfb6f351d0a1653552d0973ad7c4e3d

Modified Files
--------------
doc/src/sgml/ref/pg_receivexlog.sgml | 2 +-
src/bin/pg_basebackup/pg_receivexlog.c | 5 +++--
2 files changed, 4 insertions(+), 3 deletions(-)