Only send a single CRLF between chunks.  A second CRLF seemed to be
optional, and it worked fine with Firefox, but it didn't work with
some browsers/clients like Chrome or CURL. See RFC 2616, Section
3.6.1, for more information about Chunked Tranfer Encoding.
Merge branch 'sslmitm' of github.com:/reyk/relayd into sslmitm