- Patch #1116416 by Kars-T, Coornail: use 'Header set' instead of 'Header append' in .htaccess to avoid double encoding.

.htaccess

@@ -129,7 +129,7 @@ DirectoryIndex index.php index.html index.htm
 
     <FilesMatch "(\.js\.gz|\.css\.gz)$">
       # Serve correct encoding type.
-      Header append Content-Encoding gzip
+      Header set Content-Encoding gzip
       # Force proxies to cache gzipped & non-gzipped css/js files separately.
       Header append Vary Accept-Encoding
     </FilesMatch>