[MacPorts] #49892: stunnel @5.26_0: update to 5.27

[MacPorts]

#49892: stunnel @5.26_0: update to 5.27
---------------------------------+--------------------------------
 Reporter:  mschamschula@…       |      Owner:  macports-tickets@…
     Type:  update               |     Status:  new
 Priority:  Normal               |  Milestone:
Component:  ports                |    Version:  2.3.4
 Keywords:  haspatch maintainer  |       Port:  stunnel
---------------------------------+--------------------------------
 stunnel has been updated to version 5.27:
 * Security bugfixes
  - OpenSSL DLLs updated to version 1.0.2e.
 * New features
  - Automated build testing configured with .travis.yml.
  - Added reading server certificates from hardware engines.
    For example: cert = id_45
  - Only attempt to use potentially harmful compiler or linker
    options if gcc was detected.
  - /opt/csw added to the OpenSSL directory lookup list.

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Ticket URL: <https://trac.macports.org/ticket/49892>
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