RFR: JDK-8232186: Add verification for pkg and dmg tests

[Alexander Matveev]

Please review the jpackage fix for bug [1] at [2].

This is a fix for the JDK-8200758-branch branch of the open sandbox 
repository (jpackage).

- Removed --mac-app-store-category.
- Added Hello.java test app to support file association on OS X.
- Modified Hello.java to write output file to user home location if 
working directory is not writable.
- Fixed MacHelper:getInstallationDirectory(). It was returning extra 
/Applications when --install-dir is specified.
- Fixed SigningPackageTest to use path returned by withExplodedDmg 
correctly.
- Added install/uninstall support for pkg and dmg to manage_packages.sh.
- Fixed replaceFileName(), otherwise on OS X it was not replacing file 
name correctly, since file name does not have extension.
- Added NameWithSpaceTest.
- Removed OptionsTest which is covered by other tests.

[1] https://bugs.openjdk.java.net/browse/JDK-8232186

[2] http://cr.openjdk.java.net/~almatvee/8232186/webrev.02/

Thanks,
Alexander