remove circular dependancy

addlocaltocourse.php

addremotetocourse.php

admin_convert_form.php

admin_convertall.php

admin_convertback.php

classifajax.php

classificationlib.php

db/access.php

edit.php

encoding.php

filter.php

index.php

lib.php

locallib.php

lti_mod_form.php

metadata_xml_parser.class.php

metadataconfigure.php

metadataform.php

metadatalib.php

metadatarep.php