pgsql: Harmonize parameter names in ecpg code.

Harmonize parameter names in ecpg code.

Make ecpg function declarations consistently use named parameters. Also
make sure that the declarations use names that match corresponding names
from function definitions.

Like other recent commits that cleaned up function parameter names, this
commit was written with help from clang-tidy.

Author: Peter Geoghegan <pg(at)bowt(dot)ie>
Reviewed-By: David Rowley <dgrowleyml(at)gmail(dot)com>
Discussion: https://postgr.es/m/CAH2-WznJt9CMM9KJTMjJh_zbL5hD9oX44qdJ4aqZtjFi-zA3Tg@mail.gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/3535ebce5dc542b90f14d6e81cce80fe7226bda5

Modified Files
--------------
src/interfaces/ecpg/ecpglib/ecpglib_extern.h | 78 ++++++++++++--------
src/interfaces/ecpg/include/ecpg_informix.h | 82 +++++++++++-----------
src/interfaces/ecpg/include/ecpglib.h | 60 +++++++++-------
src/interfaces/ecpg/include/pgtypes_date.h | 20 +++---
src/interfaces/ecpg/include/pgtypes_interval.h | 8 +--
src/interfaces/ecpg/include/pgtypes_numeric.h | 36 +++++-----
src/interfaces/ecpg/include/pgtypes_timestamp.h | 12 ++--
src/interfaces/ecpg/pgtypeslib/dt.h | 22 +++---
src/interfaces/ecpg/pgtypeslib/pgtypeslib_extern.h | 8 ++-
src/interfaces/ecpg/preproc/c_keywords.c | 8 +--
src/interfaces/ecpg/preproc/ecpg.header | 2 +-
src/interfaces/ecpg/preproc/output.c | 2 +-
src/interfaces/ecpg/preproc/pgc.l | 2 +-
src/interfaces/ecpg/preproc/preproc_extern.h | 63 ++++++++++-------
src/interfaces/ecpg/preproc/type.c | 2 +-
src/interfaces/ecpg/preproc/type.h | 27 ++++---
.../ecpg/test/expected/preproc-outofscope.c | 36 +++++-----
src/interfaces/ecpg/test/expected/sql-sqlda.c | 36 +++++-----
18 files changed, 271 insertions(+), 233 deletions(-)