Add tag fragments to known text file extensions

This fixes cross-platform repeatable builds. The source bundles ended up
with mis-matched line endings.

build.xml

@@ -352,6 +352,7 @@
     <include name="**/*.shtml"/>
     <include name="**/*.svg"/>
     <include name="**/*.tag"/>
+    <include name="**/*.tagf"/>
     <include name="**/*.tagx"/>
     <include name="**/*.tasks"/>
     <include name="**/*.tld"/>