pgsql: Rename files and headers related to index AM

Rename files and headers related to index AM

The following renaming is done so as source files related to index
access methods are more consistent with table access methods (the
original names used for index AMs ware too generic, and could be
confused as including features related to table AMs):
- amapi.h -> indexam.h.
- amapi.c -> indexamapi.c. Here we have an equivalent with
backend/access/table/tableamapi.c.
- amvalidate.c -> indexamvalidate.c.
- amvalidate.h -> indexamvalidate.h.
- genam.c -> indexgenam.c.
- genam.h -> indexgenam.h.

This has been discussed during the development of v12 when table AM was
worked on, but the renaming never happened.

Author: Michael Paquier
Reviewed-by: Fabien Coelho, Julien Rouhaud
Discussion: https://postgr.es/m/20191223053434.GF34339@paquier.xyz

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/8ce3aa9b5914d1ac45ed3f9bc484f66b3c4850c7

Modified Files
--------------
contrib/bloom/blinsert.c | 2 +-
contrib/bloom/bloom.h | 2 +-
contrib/bloom/blutils.c | 2 +-
contrib/bloom/blvacuum.c | 2 +-
contrib/bloom/blvalidate.c | 2 +-
contrib/sepgsql/database.c | 2 +-
contrib/sepgsql/label.c | 2 +-
contrib/sepgsql/proc.c | 2 +-
contrib/sepgsql/relation.c | 2 +-
contrib/sepgsql/schema.c | 2 +-
src/backend/access/brin/brin_inclusion.c | 2 +-
src/backend/access/brin/brin_minmax.c | 2 +-
src/backend/access/brin/brin_validate.c | 2 +-
src/backend/access/common/detoast.c | 2 +-
src/backend/access/common/toast_internals.c | 2 +-
src/backend/access/gin/ginvalidate.c | 2 +-
src/backend/access/gist/gistbuild.c | 2 +-
src/backend/access/gist/gistbuildbuffers.c | 2 +-
src/backend/access/gist/gistget.c | 2 +-
src/backend/access/gist/gistvacuum.c | 2 +-
src/backend/access/gist/gistvalidate.c | 2 +-
src/backend/access/hash/hashvalidate.c | 2 +-
src/backend/access/heap/heapam.c | 2 +-
src/backend/access/heap/heapam_handler.c | 2 +-
src/backend/access/heap/vacuumlazy.c | 2 +-
src/backend/access/index/Makefile | 8 ++++----
src/backend/access/index/indexam.c | 2 +-
src/backend/access/index/{amapi.c => indexamapi.c} | 6 +++---
.../access/index/{amvalidate.c => indexamvalidate.c} | 6 +++---
src/backend/access/index/{genam.c => indexgenam.c} | 8 ++++----
src/backend/access/nbtree/nbtvalidate.c | 2 +-
src/backend/access/spgist/spgdoinsert.c | 2 +-
src/backend/access/spgist/spginsert.c | 2 +-
src/backend/access/spgist/spgscan.c | 2 +-
src/backend/access/spgist/spgutils.c | 2 +-
src/backend/access/spgist/spgvacuum.c | 2 +-
src/backend/access/spgist/spgvalidate.c | 2 +-
src/backend/bootstrap/bootstrap.c | 2 +-
src/backend/catalog/aclchk.c | 2 +-
src/backend/catalog/catalog.c | 2 +-
src/backend/catalog/dependency.c | 2 +-
src/backend/catalog/heap.c | 2 +-
src/backend/catalog/index.c | 2 +-
src/backend/catalog/indexing.c | 2 +-
src/backend/catalog/objectaddress.c | 2 +-
src/backend/catalog/partition.c | 2 +-
src/backend/catalog/pg_collation.c | 2 +-
src/backend/catalog/pg_constraint.c | 2 +-
src/backend/catalog/pg_db_role_setting.c | 2 +-
src/backend/catalog/pg_depend.c | 2 +-
src/backend/catalog/pg_enum.c | 2 +-
src/backend/catalog/pg_inherits.c | 2 +-
src/backend/catalog/pg_largeobject.c | 2 +-
src/backend/catalog/pg_publication.c | 2 +-
src/backend/catalog/pg_range.c | 2 +-
src/backend/catalog/pg_shdepend.c | 2 +-
src/backend/catalog/pg_subscription.c | 2 +-
src/backend/commands/analyze.c | 2 +-
src/backend/commands/cluster.c | 2 +-
src/backend/commands/comment.c | 2 +-
src/backend/commands/constraint.c | 2 +-
src/backend/commands/dbcommands.c | 2 +-
src/backend/commands/extension.c | 2 +-
src/backend/commands/functioncmds.c | 2 +-
src/backend/commands/indexcmds.c | 2 +-
src/backend/commands/matview.c | 2 +-
src/backend/commands/opclasscmds.c | 2 +-
src/backend/commands/policy.c | 2 +-
src/backend/commands/proclang.c | 2 +-
src/backend/commands/publicationcmds.c | 2 +-
src/backend/commands/seclabel.c | 2 +-
src/backend/commands/tablecmds.c | 2 +-
src/backend/commands/trigger.c | 2 +-
src/backend/commands/tsearchcmds.c | 2 +-
src/backend/commands/typecmds.c | 2 +-
src/backend/commands/user.c | 2 +-
src/backend/commands/vacuum.c | 2 +-
src/backend/executor/execAmi.c | 2 +-
src/backend/executor/execCurrent.c | 2 +-
src/backend/executor/execIndexing.c | 2 +-
src/backend/executor/execReplication.c | 2 +-
src/backend/executor/nodeBitmapIndexscan.c | 2 +-
src/backend/executor/nodeIndexonlyscan.c | 2 +-
src/backend/optimizer/path/costsize.c | 4 ++--
src/backend/optimizer/plan/planner.c | 2 +-
src/backend/optimizer/util/plancat.c | 2 +-
src/backend/parser/parse_utilcmd.c | 2 +-
src/backend/partitioning/partdesc.c | 2 +-
src/backend/replication/logical/origin.c | 2 +-
src/backend/rewrite/rewriteRemove.c | 2 +-
src/backend/statistics/extended_stats.c | 2 +-
src/backend/storage/large_object/inv_api.c | 2 +-
src/backend/utils/adt/amutils.c | 2 +-
src/backend/utils/adt/enum.c | 2 +-
src/backend/utils/adt/ruleutils.c | 2 +-
src/backend/utils/cache/catcache.c | 2 +-
src/backend/utils/cache/evtcache.c | 2 +-
src/backend/utils/cache/relfilenodemap.c | 2 +-
src/backend/utils/cache/ts_cache.c | 2 +-
src/backend/utils/init/postinit.c | 2 +-
src/include/access/brin_internal.h | 2 +-
src/include/access/gin_private.h | 2 +-
src/include/access/gist_private.h | 4 ++--
src/include/access/gistscan.h | 2 +-
src/include/access/hash.h | 2 +-
src/include/access/{amapi.h => indexam.h} | 14 +++++++-------
src/include/access/{amvalidate.h => indexamvalidate.h} | 12 ++++++------
src/include/access/{genam.h => indexgenam.h} | 14 +++++++-------
src/include/access/nbtree.h | 2 +-
src/include/access/reloptions.h | 2 +-
src/include/access/spgist.h | 2 +-
src/include/executor/nodeIndexscan.h | 2 +-
src/include/nodes/nodes.h | 2 +-
src/include/nodes/pathnodes.h | 2 +-
src/include/utils/index_selfuncs.h | 4 ++--
src/include/utils/rel.h | 2 +-
src/test/modules/dummy_index_am/dummy_index_am.c | 2 +-
117 files changed, 147 insertions(+), 147 deletions(-)