Rename functions to avoid future conflicts

Rename range_serialize/range_deserialize to
brin_range_serialize/brin_range_deserialize, since there are already
public range_serialize/range_deserialize in rangetypes.h.

Author: Paul A. Jungwirth <pj@illuminatedcomputing.com>
Discussion: https://www.postgresql.org/message-id/CA+renyX0ipvY6A_jUOHeB1q9mL4bEYfAZ5FBB7G7jUo5bykjrA@mail.gmail.com

Author: petere

src/backend/access/brin/brin_minmax_multi.c

@@ -198,7 +198,7 @@ typedef struct Ranges
  * with basic metadata, followed by the boundary values. It has a varlena
  * header, so can be treated as varlena directly.
  *
- * See range_serialize/range_deserialize for serialization details.
+ * See brin_range_serialize/brin_range_deserialize for serialization details.
  */
 typedef struct SerializedRanges
 {
@@ -217,9 +217,9 @@ typedef struct SerializedRanges
 	char		data[FLEXIBLE_ARRAY_MEMBER];
 } SerializedRanges;
 
-static SerializedRanges *range_serialize(Ranges *range);
+static SerializedRanges *brin_range_serialize(Ranges *range);
 
-static Ranges *range_deserialize(int maxvalues, SerializedRanges *range);
+static Ranges *brin_range_deserialize(int maxvalues, SerializedRanges *range);
 
 
 /*
@@ -566,14 +566,14 @@ range_deduplicate_values(Ranges *range)
 
 
 /*
- * range_serialize
+ * brin_range_serialize
  *	  Serialize the in-memory representation into a compact varlena value.
  *
  * Simply copy the header and then also the individual values, as stored
  * in the in-memory value array.
  */
 static SerializedRanges *
-range_serialize(Ranges *range)
+brin_range_serialize(Ranges *range)
 {
 	Size		len;
 	int			nvalues;
@@ -712,14 +712,14 @@ range_serialize(Ranges *range)
 }
 
 /*
- * range_deserialize
+ * brin_range_deserialize
  *	  Serialize the in-memory representation into a compact varlena value.
  *
  * Simply copy the header and then also the individual values, as stored
  * in the in-memory value array.
  */
 static Ranges *
-range_deserialize(int maxvalues, SerializedRanges *serialized)
+brin_range_deserialize(int maxvalues, SerializedRanges *serialized)
 {
 	int			i,
 				nvalues;
@@ -2405,7 +2405,7 @@ brin_minmax_multi_serialize(BrinDesc *bdesc, Datum src, Datum *dst)
 	/* At this point everything has to be fully sorted. */
 	Assert(ranges->nsorted == ranges->nvalues);
 
-	s = range_serialize(ranges);
+	s = brin_range_serialize(ranges);
 	dst[0] = PointerGetDatum(s);
 }
 
@@ -2528,7 +2528,7 @@ brin_minmax_multi_add_value(PG_FUNCTION_ARGS)
 		maxvalues = Max(maxvalues, MINMAX_BUFFER_MIN);
 		maxvalues = Min(maxvalues, MINMAX_BUFFER_MAX);
 
-		ranges = range_deserialize(maxvalues, serialized);
+		ranges = brin_range_deserialize(maxvalues, serialized);
 
 		ranges->attno = attno;
 		ranges->colloid = colloid;
@@ -2581,7 +2581,7 @@ brin_minmax_multi_consistent(PG_FUNCTION_ARGS)
 	attno = column->bv_attno;
 
 	serialized = (SerializedRanges *) PG_DETOAST_DATUM(column->bv_values[0]);
-	ranges = range_deserialize(serialized->maxvalues, serialized);
+	ranges = brin_range_deserialize(serialized->maxvalues, serialized);
 
 	/* inspect the ranges, and for each one evaluate the scan keys */
 	for (rangeno = 0; rangeno < ranges->nranges; rangeno++)
@@ -2776,8 +2776,8 @@ brin_minmax_multi_union(PG_FUNCTION_ARGS)
 	serialized_a = (SerializedRanges *) PG_DETOAST_DATUM(col_a->bv_values[0]);
 	serialized_b = (SerializedRanges *) PG_DETOAST_DATUM(col_b->bv_values[0]);
 
-	ranges_a = range_deserialize(serialized_a->maxvalues, serialized_a);
-	ranges_b = range_deserialize(serialized_b->maxvalues, serialized_b);
+	ranges_a = brin_range_deserialize(serialized_a->maxvalues, serialized_a);
+	ranges_b = brin_range_deserialize(serialized_b->maxvalues, serialized_b);
 
 	/* make sure neither of the ranges is NULL */
 	Assert(ranges_a && ranges_b);
@@ -2859,7 +2859,7 @@ brin_minmax_multi_union(PG_FUNCTION_ARGS)
 
 	/* cleanup and update the serialized value */
 	pfree(serialized_a);
-	col_a->bv_values[0] = PointerGetDatum(range_serialize(ranges_a));
+	col_a->bv_values[0] = PointerGetDatum(brin_range_serialize(ranges_a));
 
 	PG_RETURN_VOID();
 }
@@ -3041,7 +3041,7 @@ brin_minmax_multi_summary_out(PG_FUNCTION_ARGS)
 	fmgr_info(outfunc, &fmgrinfo);
 
 	/* deserialize the range info easy-to-process pieces */
-	ranges_deserialized = range_deserialize(ranges->maxvalues, ranges);
+	ranges_deserialized = brin_range_deserialize(ranges->maxvalues, ranges);
 
 	appendStringInfo(&str, "nranges: %d  nvalues: %d  maxvalues: %d",
 					 ranges_deserialized->nranges,