Update exit code support to allow the ExitCodeGenerator interface to
be placed on an Exception. Any uncaught exception implementing the
interface and returning a non `0` status will now trigger a System.exit
with the code.
Fixes gh-4803
Spring Framework’s ParamterizedRowMapper has been deprecated since
3.1 and has been removed in 4.2. Spring Batch currently relies on
ParameterizedRowMapper, making it incompatible with 4.2. To allow us to
build successfully against 4.2, this commit ignores Spring Boot’s tests
that use Spring Batch’s JDBC support.
See gh-2575
Long package names are really unnecessary in samples and they
just clutter things up. Also Spring Loaded doesn't work with
org.sfw packages, so to demo that technology you need a
different package name.