Use new filters in sample conf.

build-farm.conf

@@ -81,10 +81,13 @@ my $branch;
 
     print_success => undef,
 
-    # pattern for files whose changes do NOT trigger a build
-    # use qr[/(doc|po)/] to ignore changes to docs and po files (recommended)
+    # include / exclude pattern for files whose trigger a build
+	# if both are specified then they are both applied as filters
     # undef means don't ignore anything.
-    trigger_filter => qr[/(doc|po)/],
+    # exclude qr[/(doc|po)/] to ignore changes to docs and po files (recommended)
+    # undef means null filter.
+    trigger_exclude => qr[/(doc|po)/],
+	trigger_include => undef, 
 
     # settings for mail notices - default to notifying nobody
     # these lists contain addresses to be notified