recv more data than 1 chunk in the simpleClient debug tool.

Use the timeout feature (2s per recv) to get out of a blocking http1.1 reading.
reorganize the disengage decryptData function for further change.
use the certificate reading helpers in extra.
fold
use strict bytestring in the test. avoid using deprecated symbol.
add a nice friendly error if the certificate for stunnel are not
present.
remove BulkNoneF which only duplicate case for no reason.
add extra check for minimum size and being a blocksize multiple for block ciphers.
comment compression import.