Skip the specified classes on exception breakpoint or stepping

[testforstephen]

Signed-off-by: Jinbo Wang jinbwan@microsoft.com

It requires microsoft/java-debug#334

Close #756
Close #628

[testforstephen]

When you just want to break on exception for "Just My Code", you can

    "java.debug.settings.exceptionBreakpoint.skipClasses": [
        "$JDK", // Skip the JDK classes from the default system bootstrap classpath, such as rt.jar, jrt-fs.jar.
        "$Libraries" // Skip the classes from application libraries, such as Maven, Gradle dependencies.
    ],

When you just want to step into "Just My Code", then you can

    "java.debug.settings.stepping.skipClasses": [
        "$JDK", // Skip the JDK classes from the default system bootstrap classpath, such as rt.jar, jrt-fs.jar.
        "$Libraries" // Skip the classes from application libraries, such as Maven, Gradle dependencies.
    ]

Also, you could add a specific class name expression, e.g. java.*, *.Foo to skip the classes.

[Eskibear]

Here at a user's perspective, I don't see the meaning of $JDK and $Libraries.

• $JDK, does it mean java.* and javax., or even including javafx.? Then why there's an explicit java.lang.classloader in default value?
• $Library. This is vague, it might be better to add more description?

[testforstephen]

Here at a user's perspective, I don't see the meaning of $JDK and $Libraries.

• $JDK, does it mean java.* and javax., or even including javafx.? Then why there's an explicit java.lang.classloader in default value?
• $Library. This is vague, it might be better to add more description?

Reasonable concern. Addressed.