pgsql: pg_recvlogical: Rename --two-phase and --failover options.

pg_recvlogical: Rename --two-phase and --failover options.

This commit renames the pg_recvlogical options --two-phase and
--failover to --enable-two-phase and --enable-failover, respectively.
The new names distinguish these enabling options from action options
like --start and --create-slot, while clearly indicating their purpose
to enable specific logical slot features.

The option --failover is new in PostgreSQL 18 (commit cf2655a9029), so
no compatibility break there.  The option --two-phase has existed
since PostgreSQL 15 (commit cda03cfed6b), so for compatibility we keep
the old option name --two-phase around as deprecated.

Also note that pg_createsubscriber has acquired an --enable-two-phase
option, so this increases consistency across tools.

Co-authored-by: Masahiko Sawada <sawada.mshk@gmail.com>
Discussion: https://postgr.es/m/a28f66df-1354-4709-8d63-932ded4cac35@eisentraut.org

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/6d12d5a433c9c8cbf92fc19afd2a3465f275564c

Modified Files
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doc/src/sgml/logicaldecoding.sgml             |  2 +-
doc/src/sgml/ref/pg_recvlogical.sgml          |  9 +++++----
src/bin/pg_basebackup/pg_recvlogical.c        | 20 +++++++++++---------
src/bin/pg_basebackup/t/030_pg_recvlogical.pl |  4 ++--
4 files changed, 19 insertions(+), 16 deletions(-)