[logback-dev] [qos-ch/logback] 70cb83: update to slf4j dependency to 1.7.4

[Ceki Gulcu]

  Branch: refs/heads/master
  Home:   https://github.com/qos-ch/logback
  Commit: 70cb83558e730a72b1eabed066703985c1abc1a6
      https://github.com/qos-ch/logback/commit/70cb83558e730a72b1eabed066703985c1abc1a6
  Author: Ceki Gulcu <ceki at qos.ch>
  Date:   2013-03-19 (Tue, 19 Mar 2013)

  Changed paths:
    M pom.xml

  Log Message:
  -----------
  update to slf4j dependency to 1.7.4