pgsql: Rename pg_recvlogical's --create/--drop to --create-slot/--drop-

Rename pg_recvlogical's --create/--drop to --create-slot/--drop-slot.

A future patch (9.5 only) adds slot management to pg_receivexlog. The
verbs create/drop don't seem descriptive enough there. It seems better
to rename pg_recvlogical's commands now, in beta, than live with the
inconsistency forever.

The old form (e.g. --drop) will still be accepted by virtue of most
getopt_long() options accepting abbreviations for long commands.

Backpatch to 9.4 where pg_recvlogical was introduced.

Author: Michael Paquier and Andres Freund
Discussion: CAB7nPqQtt79U6FmhwvgqJmNyWcVCbbV-nS72j_jyPEopERg9rg@mail.gmail.com

Branch
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REL9_4_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/0cd700477466d260ed9c61d0af87df18f7cbfd1a

Modified Files
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doc/src/sgml/logicaldecoding.sgml      |    4 ++--
doc/src/sgml/ref/pg_recvlogical.sgml   |    9 +++++----
src/bin/pg_basebackup/pg_recvlogical.c |   12 ++++++------
3 files changed, 13 insertions(+), 12 deletions(-)