Rename regress.so's .mo file to postgresql-regress-VERSION.mo.

I originally used just "regress-VERSION.mo", but that seems too generic considering that some packagers will put this file into a system-wide directory. Per suggestion from Christoph Berg. Reported-by: Christoph Berg <myon@debian.org> Author: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/aULSW7Xqx5MqDW_1@msg.df7cb.de

Author: tglsfdc

src/test/regress/nls.mk

@@ -1,5 +1,5 @@
 # src/test/regress/nls.mk
-CATALOG_NAME = regress
+CATALOG_NAME = postgresql-regress
 GETTEXT_FILES = regress.c
 GETTEXT_TRIGGERS = $(BACKEND_COMMON_GETTEXT_TRIGGERS)
 GETTEXT_FLAGS = $(BACKEND_COMMON_GETTEXT_FLAGS)

src/test/regress/po/meson.build

@@ -1,3 +1,3 @@
 # Copyright (c) 2022-2025, PostgreSQL Global Development Group
 
-nls_targets += [i18n.gettext('regress-' + pg_version_major.to_string())]
+nls_targets += [i18n.gettext('postgresql-regress-' + pg_version_major.to_string())]

src/test/regress/regress.c

@@ -50,7 +50,7 @@
 
 /* define our text domain for translations */
 #undef TEXTDOMAIN
-#define TEXTDOMAIN PG_TEXTDOMAIN("regress")
+#define TEXTDOMAIN PG_TEXTDOMAIN("postgresql-regress")
 
 #define EXPECT_TRUE(expr)	\
 do { \