added intellij-codestyle.xml and applying it to all java code

[ronreynolds]

applying code-style via IntelliJ to make java code consistent and thus easier to read; ABSOLUTELY NO functional changes; just cleaner code.

includes intellij-codestyle.xml so that other IntelliJ users can import it as the project-level style.

applied to a handful of java classes to show the fairly minimal changes it would cause (all of which seemed reasonable to me).

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