Revert renaming of int44in/int44out.

This seemed like a good idea in commit be42eb9d6, but it causes more
trouble than it's worth for cross-branch upgrade testing.

Discussion: https://postgr.es/m/11927.1519756619@sss.pgh.pa.us

src/test/regress/expected/create_type.out

@@ -16,8 +16,8 @@ CREATE TYPE widget (
 );
 CREATE TYPE city_budget (
    internallength = 16,
-   input = city_budget_in,
+   input = int44in,
-   output = city_budget_out,
+   output = int44out,
    element = int4,
    category = 'x',   -- just to verify the system will take it
    preferred = true  -- ditto

src/test/regress/input/create_function_1.source

@@ -12,12 +12,12 @@ CREATE FUNCTION widget_out(widget)
    AS '@libdir@/regress@DLSUFFIX@'
    LANGUAGE C STRICT IMMUTABLE;
 
-CREATE FUNCTION city_budget_in(cstring)
+CREATE FUNCTION int44in(cstring)
    RETURNS city_budget
    AS '@libdir@/regress@DLSUFFIX@'
    LANGUAGE C STRICT IMMUTABLE;
 
-CREATE FUNCTION city_budget_out(city_budget)
+CREATE FUNCTION int44out(city_budget)
    RETURNS cstring
    AS '@libdir@/regress@DLSUFFIX@'
    LANGUAGE C STRICT IMMUTABLE;

src/test/regress/output/create_function_1.source

@@ -12,13 +12,13 @@ CREATE FUNCTION widget_out(widget)
    AS '@libdir@/regress@DLSUFFIX@'
    LANGUAGE C STRICT IMMUTABLE;
 NOTICE:  argument type widget is only a shell
-CREATE FUNCTION city_budget_in(cstring)
+CREATE FUNCTION int44in(cstring)
    RETURNS city_budget
    AS '@libdir@/regress@DLSUFFIX@'
    LANGUAGE C STRICT IMMUTABLE;
 NOTICE:  type "city_budget" is not yet defined
 DETAIL:  Creating a shell type definition.
-CREATE FUNCTION city_budget_out(city_budget)
+CREATE FUNCTION int44out(city_budget)
    RETURNS cstring
    AS '@libdir@/regress@DLSUFFIX@'
    LANGUAGE C STRICT IMMUTABLE;

src/test/regress/regress.c

@@ -442,19 +442,19 @@ set_ttdummy(PG_FUNCTION_ARGS)
 
 
 /*
- * Type city_budget has no real-world use, but the regression tests use it.
+ * Type int44 has no real-world use, but the regression tests use it
- * It's a four-element vector of int4's.
+ * (under the alias "city_budget").  It's a four-element vector of int4's.
  */
 
 /*
- *		city_budget_in			- converts "num, num, ..." to internal form
+ *		int44in			- converts "num, num, ..." to internal form
  *
  *		Note: Fills any missing positions with zeroes.
  */
-PG_FUNCTION_INFO_V1(city_budget_in);
+PG_FUNCTION_INFO_V1(int44in);
 
 Datum
-city_budget_in(PG_FUNCTION_ARGS)
+int44in(PG_FUNCTION_ARGS)
 {
 	char	   *input_string = PG_GETARG_CSTRING(0);
 	int32	   *result = (int32 *) palloc(4 * sizeof(int32));
@@ -473,12 +473,12 @@ city_budget_in(PG_FUNCTION_ARGS)
 }
 
 /*
- *		city_budget_out		- converts internal form to "num, num, ..."
+ *		int44out		- converts internal form to "num, num, ..."
  */
-PG_FUNCTION_INFO_V1(city_budget_out);
+PG_FUNCTION_INFO_V1(int44out);
 
 Datum
-city_budget_out(PG_FUNCTION_ARGS)
+int44out(PG_FUNCTION_ARGS)
 {
 	int32	   *an_array = (int32 *) PG_GETARG_POINTER(0);
 	char	   *result = (char *) palloc(16 * 4);

src/test/regress/sql/create_type.sql

@@ -18,8 +18,8 @@ CREATE TYPE widget (
 
 CREATE TYPE city_budget (
    internallength = 16,
-   input = city_budget_in,
+   input = int44in,
-   output = city_budget_out,
+   output = int44out,
    element = int4,
    category = 'x',   -- just to verify the system will take it
    preferred = true  -- ditto