doc: Scute can now be used to sign emails.
* doc/manual/scute.texi: Explain how to use Scute for email signing. * doc/manual/thunderbird-account-settings.png: New image. * doc/manual/thunderbird-smime-button.png: New image. * doc/manual/Makefile.am: Include the two above files. * doc/website/index.xhtml: Mention the email signing capability. * README: Likewise.
Since commit e22c8cf, which added support for generic hash functions
in addition to the TLS-specific 'tls-md5sha1', Scute is no longer
limited to TLS client authentication.
- Signed-off-by: Damien Goutte-Gattat <dgouttegattat@incenp.org>
