pgsql: formatting.c cleanup: Rename DCH_S_* to DCH_SUFFIX_*

formatting.c cleanup: Rename DCH_S_* to DCH_SUFFIX_*

For clarity. Also rename several related macros and turn them into
inline functions.

Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: /messages/by-id/6dd9d208-a3ed-49b5-b03d-8617261da973@eisentraut.org

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/da2052ab9a256277391a361715abb66c9b7956c4

Modified Files
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src/backend/utils/adt/formatting.c | 239 ++++++++++++++++++++-----------------
1 file changed, 131 insertions(+), 108 deletions(-)