Bug 42099: Add SimpleFilterTest, rebrand as just filter

git-svn-id: https://svn.apache.org/repos/asf/logging/sandbox/log4j/expression-filter@530952 13f79535-47bb-0310-9956-ffa450edef68
23 files changed
tree: f90ed49d6b83b05d96a0096d6678c7538b5de1e8
  1. src/
  2. build.xml
  3. LICENSE
  4. NOTICE
  5. pom.xml