Update build systems to use logback instead of log4j
Move IJStatusEchoer and ImporterProcess to logback
Remove checkLibrary call for log4j
Add logback jars
Create LogbackTools from DebugTools

Rather than attempt to do all of the logback configuration
in the ReflectedUniverse, this commits moves the LB logic
out into LogbackTools and only references those static methods
from the ReflectedUniverse. The next step will be to do this
behind a SPI interface.
Minor change to scans-dep comment on Location
Remove explicit logback from lib.dir

logback is also found in the artifacts directory
during execution causing a warning to be printed
during testing.
Migrate test-suite to use logback (or nothing)
Add small whats-new place holder
Temporarily turn configuration debugging on
Remove logback references from ImportProcess

If log4j is present in ImageJ1 and is found before
logback, then having explicit imports of logback
classes in key loci-plugins classes will prevent
Bio-Formats from working at all.

This commit follows the previous strategy of hiding
the hefty lifting in LogbackTools and just referencing
those methods safely from a ReflectedUniverse in
DebugTools.
Fix the scope of logback dependencies in Maven

The Maven build should now pass.
Remove log4j jars
Fix LogbackTools to correctly override logback's defaults
Fix logback system property in target-test-runner
Merge pull request #2 from melissalinkert/logback

Build and default logging fixes
Revert "Remove log4j jars"

This reverts commit 9b1a957303c323ea7f8820cb00814b59641a6432.
Add Log4jTools for MATLAB support

In order to match the behavior in MATLAB with 4.4,
`DebugTools.enableLogging("INFO")` etc. should continue
to work. Since log4j is shipped with MATLAB 2013, the
only way for this to function is for us to fallback to
configuring Log4j if Logback is not present.

Note: the use of `LOGGER.debug` in `ReflectedUniverse`
makes it unusable for the initial logging configuration.
Likely all uses of LOGGER should be removed from RU which
shouldn't be an issue since for each log statement a
`ReflectException` with the same message is thrown.
Merge remote-tracking branch 'origin/dev_5_0' into logback
Move loci_tools.jar back to log4j