add a proper unit test for them.
Also add : to the list of separators in compare_table.pl so that line
numbers in E_INFO won't throw it off.
git-svn-id: svn+ssh://svn.code.sf.net/p/cmusphinx/code/trunk/sphinxbase@7073 94700074-3cef-4d97-a70e-9c8c206c02f5