Add copyright notices to meson files

Discussion: https://postgr.es/m/222b43a5-2fb3-2c1b-9cd0-375d376c8246@dunslane.net

src/backend/access/brin/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 backend_sources += files(
   'brin.c',
   'brin_bloom.c',

src/backend/access/common/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 backend_sources += files(
   'attmap.c',
   'bufmask.c',

src/backend/access/gin/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 backend_sources += files(
   'ginarrayproc.c',
   'ginbtree.c',

src/backend/access/gist/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 backend_sources += files(
   'gist.c',
   'gistbuild.c',

src/backend/access/hash/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 backend_sources += files(
   'hash.c',
   'hash_xlog.c',

src/backend/access/heap/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 backend_sources += files(
   'heapam.c',
   'heapam_handler.c',

src/backend/access/index/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 backend_sources += files(
   'amapi.c',
   'amvalidate.c',

src/backend/access/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 subdir('brin')
 subdir('common')
 subdir('gin')

src/backend/access/nbtree/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 backend_sources += files(
   'nbtcompare.c',
   'nbtdedup.c',

src/backend/access/rmgrdesc/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 # used by frontend programs like pg_waldump
 rmgr_desc_sources = files(
   'brindesc.c',

src/backend/access/spgist/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 backend_sources += files(
   'spgdoinsert.c',
   'spginsert.c',

src/backend/access/table/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 backend_sources += files(
   'table.c',
   'tableam.c',

src/backend/access/tablesample/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 backend_sources += files(
   'bernoulli.c',
   'system.c',

src/backend/access/transam/meson.build

@@ -1,3 +1,5 @@
+# Copyright (c) 2022, PostgreSQL Global Development Group
+
 backend_sources += files(
   'clog.c',
   'commit_ts.c',