[MANTTASKS-71] Add mvn task that can be used to call a maven build.  Also add documentation for using the java task to call maven.

git-svn-id: https://svn.apache.org/repos/asf/maven/ant-tasks/branches/maven-ant-tasks-2.0.x@772461 13f79535-47bb-0310-9956-ffa450edef68
8 files changed
tree: a070d91b9842fe4d409e2b79e91bfbe0f074bfda
  1. src/
  2. pom.xml
  3. sample-build-test.pom
  4. sample.build.xml