Fixed #288.
Fix #282, improve DMDL compiler error message

Revised semantics validators of DMDL compiler
about joined/summarized-models' grouping property syntax.
Fix #284.
Fixed #285.

strict enum type checking in *Branch op
Manages application dependency libraries per project (#287).

* Add dependency libraries processor.

  This processor will deploy libraries in "<project>/src/main/lib"
  to "<output>/usr/lib".

* Supports "src/main/lib" for test driver.
Japanese message resources of DMDL Compiler (#289).
Dataflow tracing on testing (#291).
Reduce heap usage in java-dom (#292).
Merge remote-tracking branch 'private/issue/282' into 0.5-develop
Merge remote-tracking branch 'private/issue/284' into 0.5-develop
Merge remote-tracking branch 'private/issue/285' into 0.5-develop
Merge remote-tracking branch 'private/issue/287' into 0.5-develop
Merge remote-tracking branch 'private/issue/288' into 0.5-develop
Merge remote-tracking branch 'private/issue/289' into 0.5-develop

Conflicts:
	dmdl-project/asakusa-dmdl-core/src/main/java/com/asakusafw/dmdl/analyzer/DmdlAnalyzer.java
Merge remote-tracking branch 'private/issue/291' into 0.5-develop
Merge remote-tracking branch 'private/issue/292' into 0.5-develop
Ignored unnecessary findbugs bug detection (#291).
Update Maven plugins to recent versions (0.5.1) (#293).
Merge remote-tracking branch 'private/issue/291' into 0.5-develop
Merge remote-tracking branch 'private/issue/293' into 0.5-develop