Item13677: Load spec files in extension name order

UI tabs are arranged in order of extension name. So need to find all the
files, then sort by extension and load them.

core/lib/Foswiki/Configure/LoadSpec.pm

@@ -120,18 +120,24 @@ sub readSpec {
           )
         {
 
-            _loadSpecsFrom( "$dir/$subdir", $root, \%read, $reporter );
+            _findSpecsFrom( "$dir/$subdir", $root, \%read, $reporter );
         }
     }
+
+    foreach my $file ( sort keys %read ) {
+        parse( $read{$file}, $root, $reporter );
+    }
+
 }
 
-sub _loadSpecsFrom {
+sub _findSpecsFrom {
     my ( $dir, $root, $read, $reporter ) = @_;
 
     return unless opendir( D, $dir );
 
     # note we ignore specs from any extension where the name starts
     # with "Empty" e.g. EmptyPlugin, EmptyContrib
+    my @specfiles;
     foreach my $extension ( sort grep { !/^\./ && !/^Empty/ } readdir D ) {
 
         next if $read->{$extension};
@@ -140,7 +146,6 @@ sub _loadSpecsFrom {
         $extension = $1;    # untaint
         my $file = "$dir/$extension/Config.spec";
         next unless -e $file;
-        parse( $file, $root, $reporter );
         $read->{$extension} = $file;
     }
     closedir(D);