pgsql: Fix incorrect source filename references

Fix incorrect source filename references

Jian He reported the src/include/utility/tcop.h one and the remainder
were found by using a script to look for src/* and check that we have a
filename or directory of that name.

In passing, fix some out-date comments.

Reported-by: Jian He <jian(dot)universality(at)gmail(dot)com>
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/CACJufxGoE3H-7VgO02=PrR4SNuVWDVbfTyUnwO0HvS-Lxurnog@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/7ec4b9ff80d92fee3c41eb1a069cc32d0ec11da1

Modified Files
--------------
src/backend/commands/aggregatecmds.c | 8 ++++----
src/backend/commands/define.c | 15 +--------------
src/backend/commands/functioncmds.c | 2 +-
src/backend/commands/operatorcmds.c | 2 +-
src/backend/commands/typecmds.c | 2 +-
src/backend/tcop/utility.c | 2 +-
src/backend/utils/misc/guc_internal.h | 2 +-
src/fe_utils/astreamer_file.c | 2 +-
src/fe_utils/astreamer_gzip.c | 2 +-
src/fe_utils/astreamer_lz4.c | 2 +-
src/fe_utils/astreamer_tar.c | 2 +-
src/fe_utils/astreamer_zstd.c | 2 +-
src/include/fe_utils/astreamer.h | 2 +-
13 files changed, 16 insertions(+), 29 deletions(-)