Version 4.27

Fixed check for Digest::SHA1 and Crypt::PasswdMD5 to always check
system perl

Added a note about rpmsave files should only be relevant for pure-ftpd
if TLS is broken (case 63887)

Added a check to see if CallUploadScript is set to yes in
/etc/pure-ftpd.conf and nothing is listing on the socket
as likely broken cxs install
Merge pull request #11 from bdraco/master

Version 4.27