pgsql: code: replace most remaining uses of 'master'.

code: replace most remaining uses of 'master'.

Author: Andres Freund
Reviewed-By: David Steele
Discussion: https://postgr.es/m/20200615182235.x7lch5n6kcjq4aue@alap3.anarazel.de

Branch
------
master

Details
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https://git.postgresql.org/pg/commitdiff/a9a4a7ad565b136cbee735d4bb505d98d06da522

Modified Files
--------------
src/backend/access/transam/xlog.c    | 16 +++++++++-------
src/backend/catalog/index.c          |  2 +-
src/backend/catalog/toasting.c       |  4 ++--
src/backend/commands/vacuum.c        |  4 ++--
src/backend/libpq/hba.c              | 12 +++++++-----
src/backend/libpq/pqcomm.c           |  4 ++--
src/backend/optimizer/plan/planner.c |  4 ++--
src/backend/parser/gram.y            |  2 +-
src/backend/snowball/README          |  4 ++--
src/backend/utils/time/snapmgr.c     |  4 ++--
src/include/nodes/execnodes.h        |  2 +-
src/include/utils/snapmgr.h          |  2 +-
src/pl/tcl/pltcl.c                   | 10 +++++-----
13 files changed, 37 insertions(+), 33 deletions(-)