added slf4j dependendency to scr plugin, see http://felix.apache.org/site/apache-felix-scr-plugin-faq.html#ApacheFelixSCRPluginFAQ-NoClassDefFoundErrorduringbuild
added slf4j dependendency to scr plugin, see http://felix.apache.org/site/apache-felix-scr-plugin-faq.html#ApacheFelixSCRPluginFAQ-NoClassDefFoundErrorduringbuild

git-svn-id: 38b6077511a9281ad6e07629729fbb76b9a63fb8@998784 13f79535-47bb-0310-9956-ffa450edef68

apache/clerezza,apache/clerezza