From http://www.jwz.org/xscreensaver/xscreensaver-5.24.tar.gz

[xscreensaver] / OSX / Sparkle.framework / Versions / A / Resources / pt.lproj

diff --git a/OSX/Sparkle.framework/Versions/A/Resources/pt.lproj b/OSX/Sparkle.framework/Versions/A/Resources/pt.lproj
new file mode 120000 (symlink)
index 0000000..3c1c9f6
--- /dev/null
+++ b/OSX/Sparkle.framework/Versions/A/Resources/pt.lproj
@@ -0,0 +1 @@
+pt_BR.lproj
\ No newline at end of file