Marina

…=C for 16+ See the commit f413941f41d370a7893caa3e6ed384b89a0577fd (Fix t_isspace(), etc., when datlocprovider=i and datctype=C.) in PostgreSQL 16+. A fix for previous major versions will be added later.

Allow the PG_CONFIG environment variable to be used without overridin…

4

…g it Otherwise the following command will fail: $ PG_CONFIG=... make make: pg_config: No such file or directory make: *** No targets. Stop. Other methods still work: $ PATH=... make...