Too aggressive minimizejre: Breaks Gdx.app.getPreferences

[n3o59hf]

Problem happens only with minimizejre: true.

Used JRE: openjdk-1.7.0-u40-unofficial-windows-i586-image.zip

Application throws exception

    javax.xml.parsers.FactoryConfigurationError: Provider com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderFactoryImpl not found
            at javax.xml.parsers.DocumentBuilderFactory.newInstance(DocumentBuilderFactory.java:127)
            at java.util.XMLUtils.getLoadingDoc(XMLUtils.java:92)
            at java.util.XMLUtils.load(XMLUtils.java:74)
            at java.util.Properties.loadFromXML(Properties.java:868)
            at com.badlogic.gdx.backends.lwjgl.LwjglPreferences.<init>(LwjglPreferences.java:51)
            at com.badlogic.gdx.backends.lwjgl.LwjglPreferences.<init>(LwjglPreferences.java:41)
            at com.badlogic.gdx.backends.lwjgl.LwjglApplication.getPreferences(LwjglApplication.java:307)
            at com.redacted.w.data.DataStorage.<init>(DataStorage.java:35)
            at com.redacted.w.MainApp.create(MainApp.java:132)
            at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:136)
            at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:114)
    Caused by: java.lang.ClassNotFoundException: com/sun/org/apache/xerces/internal/jaxp/DocumentBuilderFactoryImpl
            at java.lang.Class.forName0(Native Method)
            at java.lang.Class.forName(Class.java:270)
            at javax.xml.parsers.FactoryFinder.getProviderClass(FactoryFinder.java:123)
            at javax.xml.parsers.FactoryFinder.newInstance(FactoryFinder.java:178)
            at javax.xml.parsers.FactoryFinder.newInstance(FactoryFinder.java:147)
            at javax.xml.parsers.FactoryFinder.find(FactoryFinder.java:265)
            at javax.xml.parsers.DocumentBuilderFactory.newInstance(DocumentBuilderFactory.java:121)
            ... 10 more

on accessing preferences by using Gdx.app.getPreferences("name")

Userful comment from @tommyettinger on IRC:

<TEttinger> comment out this line and I think that should enable the dependencies of prefs.  it may need others
<TEttinger> https://github.com/libgdx/packr/blob/master/src/main/java/com/badlogicgames/packr/Packr.java#L189

[tommyettinger]

Yep, that's me. It could be useful at some point to stick the minimization of a JRE in its own config file; in particular when @alexkasko gets an OpenJDK 8 JRE out, the contents of rt.jar may change.

[badlogic]

Fixed by letting folks specify their own minimization config.