can't fail, but better safe than sorry
fix memory leak in rfc822 parser
fix memory leak
 Allow empty headers.
do not allow SSLv3
Merge branch 'master' into portable
add a (high) limit to the number of header lines we're willing to keep in
memory for rewriting purposes, this will prevent sessions from sending an
insanely large number of continuations to a single header and starve us.
Merge branch 'master' into portable
Merge pull request #496 from bocal/empty_headers

 Allow empty headers.
 Allow empty headers.
revert, incorrect
Merge branch 'master' into portable
 Allow empty headers.
Merge branch 'master' into portable