FELIX-3180 Provide MessageFormat based logging method
  - adapt calls to the old log method benefitting from the new method
  - remove unneeded isLogEnabled calls
  - add some more debug logging

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1187346 13f79535-47bb-0310-9956-ffa450edef68
4 files changed