Checkpoint commit for OPENDJ-1288 :
Migrate I18n and logging support to i18n framework and SLF4J
* Choose between 2 loggers implementation for launch scripts
** server scripts (start-ds, stop-ds) : use opendj-slf4j-adapter
** other scripts (tools) : use slf4j-jdk14 (java.util.logging)
** some tools won't output logs because they don't configure
handlers for java.util.logging
** build.xml generate two jars : bootstrap.jar and bootstrap-client.jar
to allow to choose logger implementation
* Add JDkLoggingFormatter class to format messages logged with
java.util.logging, used by tools
* Fix wrong level when logging in several classes
* Fix logging behavior for Tasks
* Fix OPENDJ-1315 Tools output should not be displayed with
severity "SEVERE_ERROR"
* Fix OPENDJ-1329 Some messages in start-ds output should not be
displayed with FATAL_ERROR severity
* Fix OPENDJ-1327 ${TMPDIR}/opendj-*.log files don't contain any logs/traces
