SDL: build-scripts/fnsince.pl: Deal with new point-release system.

From 98dfc9296a35194da4aa8cdd187285f6b60159e8 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Tue, 25 Oct 2022 14:03:32 -0400
Subject: [PATCH] build-scripts/fnsince.pl: Deal with new point-release system.

This ignores 2.x.1 (etc) releases, which prevents it from thinking
the next official non-point-release version is 2.26.1, when it
should be 2.26.0, because it saw the "latest" release is 2.24.1.

This fixes the wiki ending up with imaginary version numbers for
the "this function is available since SDL 2.x.y" sections.

Fixes #6343.
---
 build-scripts/fnsince.pl | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/build-scripts/fnsince.pl b/build-scripts/fnsince.pl
index fde65c8622b8..d49fa54e912f 100755
--- a/build-scripts/fnsince.pl
+++ b/build-scripts/fnsince.pl
@@ -19,7 +19,15 @@
 while (<PIPEFH>) {
     chomp;
     if (/\Arelease\-(.*?)\Z/) {
-        push @unsorted_releases, $1;
+        # After 2.24.x, ignore anything that isn't a x.y.0 release.
+        # We moved to bugfix-only point releases there, so make sure new APIs
+        #  are assigned to the next minor version and ignore the patch versions.
+        my $ver = $1;
+        my @versplit = split /\./, $ver;
+        next if (scalar(@versplit) > 2) && (($versplit[0] > 2) || (($versplit[0] == 2) && ($versplit[1] >= 24))) && ($versplit[2] != 0);
+
+        # Consider this release version.
+        push @unsorted_releases, $ver;
     }
 
 }