Fixed #295.

Regression: Failed to compile DMDL script on Windows.
Merge remote-tracking branch 'private/issue/295' into 0.5-develop
Fixed #296.

Dependency for hadoop on dmdl-java should have provided scope.
Merge remote-tracking branch 'private/issue/296' into 0.5-develop
Changed dependency directory from 'src/main/lib' to 'src/main/libs' (#287).
Merge remote-tracking branch 'private/issue/287' into 0.5-develop
Merge remote-tracking branch 'central/0.5-develop' into 0.5-release
Bumped version number to 0.5.1-RC3