Fix incorrect format placeholders

Also remove obsolete comments about why the 64-bit integers need to be
printed in a separate buffer.  The reason used to be portability, but
now the remaining reason is that we need the string lengths for the
progress displays.  That is evident by looking at the code right
below, so a new comment doesn't seem necessary.

Author: petere

src/bin/pg_amcheck/pg_amcheck.c

@@ -1226,15 +1226,10 @@ progress_report(uint64 relations_total, uint64 relations_checked,
 	if (relpages_total)
 		percent_pages = (int) (relpages_checked * 100 / relpages_total);
 
-	/*
-	 * Separate step to keep platform-dependent format code out of fprintf
-	 * calls.  We only test for INT64_FORMAT availability in snprintf, not
-	 * fprintf.
-	 */
-	snprintf(checked_rel, sizeof(checked_rel), INT64_FORMAT, relations_checked);
-	snprintf(total_rel, sizeof(total_rel), INT64_FORMAT, relations_total);
-	snprintf(checked_pages, sizeof(checked_pages), INT64_FORMAT, relpages_checked);
-	snprintf(total_pages, sizeof(total_pages), INT64_FORMAT, relpages_total);
+	snprintf(checked_rel, sizeof(checked_rel), UINT64_FORMAT, relations_checked);
+	snprintf(total_rel, sizeof(total_rel), UINT64_FORMAT, relations_total);
+	snprintf(checked_pages, sizeof(checked_pages), UINT64_FORMAT, relpages_checked);
+	snprintf(total_pages, sizeof(total_pages), UINT64_FORMAT, relpages_total);
 
 #define VERBOSE_DATNAME_LENGTH 35
 	if (opts.verbose)

src/bin/pg_basebackup/pg_basebackup.c

@@ -804,14 +804,9 @@ progress_report(int tablespacenum, const char *filename,
 	if (totaldone / 1024 > totalsize_kb)
 		totalsize_kb = totaldone / 1024;
 
-	/*
-	 * Separate step to keep platform-dependent format code out of
-	 * translatable strings.  And we only test for INT64_FORMAT availability
-	 * in snprintf, not fprintf.
-	 */
-	snprintf(totaldone_str, sizeof(totaldone_str), INT64_FORMAT,
+	snprintf(totaldone_str, sizeof(totaldone_str), UINT64_FORMAT,
 			 totaldone / 1024);
-	snprintf(totalsize_str, sizeof(totalsize_str), INT64_FORMAT, totalsize_kb);
+	snprintf(totalsize_str, sizeof(totalsize_str), UINT64_FORMAT, totalsize_kb);
 
 #define VERBOSE_FILENAME_LENGTH 35
 	if (verbose)

src/bin/pg_rewind/pg_rewind.c

@@ -759,14 +759,9 @@ progress_report(bool finished)
 	if (fetch_done > fetch_size)
 		fetch_size = fetch_done;
 
-	/*
-	 * Separate step to keep platform-dependent format code out of
-	 * translatable strings.  And we only test for INT64_FORMAT availability
-	 * in snprintf, not fprintf.
-	 */
-	snprintf(fetch_done_str, sizeof(fetch_done_str), INT64_FORMAT,
+	snprintf(fetch_done_str, sizeof(fetch_done_str), UINT64_FORMAT,
 			 fetch_done / 1024);
-	snprintf(fetch_size_str, sizeof(fetch_size_str), INT64_FORMAT,
+	snprintf(fetch_size_str, sizeof(fetch_size_str), UINT64_FORMAT,
 			 fetch_size / 1024);
 
 	fprintf(stderr, _("%*s/%s kB (%d%%) copied"),