While the benign exception that Gemfire outputs is unfortunate, it
isn't sufficient justification for adding dependency management for
Spring Shell.

Closes gh-5444

Previously, JarLauncher considered any entry whose name began with
BOOT-INF/classes/ as being a nested entry. This was incorrect as it
meant that subdirectories of BOOT-INF/classes/ would be added to the
classpath rather than just BOOT-INF/classes/ itself.

This commit updates JarLauncher so that only directory entries with a
name equal to BOOT-INF/classes are used.

Closes gh-5610

Previously, if a JarFile was created from a directory nested inside
another jar file, it would look for the manifest in
pathFromRoot/META-INF/MANIFEST.MF. This is incorrect as, unlike a
JarFile created from a jar file, the archives are one and the same
so the manifests should be too.

This commit updates JarFile so that its aware of how it was created
(direct from a file, from a nested directory, from a nested jar). If
it was created from a file or from a nested jar, it uses its manifest.
If it was created from a nested directory, it uses the manifest of the
root archive.

Closes gh-5609

Closes gh-5608

Closes gh-5607

Closes gh-5606

Closes gh-5605

Closes gh-5604

Closes gh-5603

Closes gh-5602

Closes gh-5601

Closes gh-5600

Closes gh-5599

Closes gh-5598

Closes gh-5597

Closes gh-5596

Closes gh-5595

Closes gh-5594

Closes gh-5593

Closes gh-5592

* pr/5561:
  Polish contribution
  Fix spring.profiles.active value handling

Closes gh-5561

Previously, `spring.profiles.active` did not trim the individual comma
separate values. As a result, such profile wasn't enabled as expected.

This commit makes sure to trim whitespaces.

Closes gh-5442

Closes gh-3945

Closes gh-5588

Closes gh-5587

Closes gh-5586

Closes gh-5585

Closes gh-5584

Closes gh-5583

Closes gh-5582

Closes gh-5581

Closes gh-5580

Closes gh-5579

Closes gh-5578

Closes gh-5577

Closes gh-5568

* pr/5444:
  Polish contribution
  Polish Pivotal GemFire starter and sample

Closes gh-5444