templates/rss/changelogentry.tmpl

patchbomb: fix parsing of multiple addresses, allow multiple addrs in --to/cc/bcc

Instead of using custom code to split apart addresses, we now use
mail.parseaddrlist() which always does the Right Thing as it relies on Python's
email.Utils.getaddresses().

Previously, 'hg email --to=foo,bar' only respected foo and discarded bar. Also,
commas in names were not allowed in hgrc or the interactive prompt; specifying
'"Lastname, Firstname" <foo>' would confuse patchbomb.

The testcase uses '-m tmp.mbox' because -n (like in other tests) would disable
address mangling.

<item>
    <title>{desc|strip|firstline|strip|escape}</title>
    <guid isPermaLink="true">{urlbase}{url}rev/{node|short}</guid>
    <description><![CDATA[{desc|strip|escape|addbreaks|nonempty}]]></description>
    <author>{author|obfuscate}</author>
    <pubDate>{date|rfc822date}</pubDate>
</item>