templater: look up mapping table through template engine These functions are stub for symbol/resource separation. This series is intended to address the following problems: a) internal data may be exposed to user (issue5699) b) defaults['repo'] (a repository name) will conflict with mapping['repo'] (a repo object) in hgweb

debug: add newlines at the end of three locations that appear to need it Differential Revision: https://phab.mercurial-scm.org/D1720