[Dovecot] CATENATE mis-reads literal after bad URL

[Timo Sirainen]

On 3.5.2013, at 4.00, Mike Abbott <michael.abbott at apple.com> wrote:

> Dovecot-2.2.1 plus Timo's recent CATENATE and URLAUTH fixes mishandles literals after bad URLs.

That input_skip_line is highly annoying in the APPEND code. Elsewhere it kind of makes sense, but in APPEND it's difficult to keep track of when it should be set or shouldn't be set. I fixed the most obvious places in hg, and also fixes several other bugs I noticed in parsing invalid APPEND parameters.