Qsmtp 0.39

• Qsmtpd: hide SSL error details from SMTP client
• Qsmtpd: allow the SSL key to be stored independent of the certificate
• Qsmtpd: allow an additional argument for checkpassword authentication
• Qsmtpd: fix filtering out invalid characters in SPF records on platforms where "char" is unsigned by default (e.g. ARM)
• Qsmtpd: fix truncated "Received" lines with newer gcc versions
• Qsmtpd: fix endless loop on SSL protocol level errors
• add dumpipbl tool to show the files written by addipbl