hgext: more patchbomb documentation + Add a description of how to enable this extension + Note which command it provides (it's not very easy to guess that "hgext.patchbomb" enables the "email" command, unless one can read Python sources) + Expand the descriptions of the -n and -m options of "hg email". + Mention that formail is (commonly) part of the procmail package.

<item>
    <title>#desc|strip|firstline|strip|escape#</title>
    <link>#url#?f=#filenode|short#;file=#file|urlescape#</link>
    <description><![CDATA[#desc|strip|escape|addbreaks#]]></description>
    <author>#author|obfuscate#</author>
    <pubDate>#date|rfc822date#</pubDate>>
</item>