RFC: Bug in JNLPClassloader when using nested jars

[Omair Majid]

Hi,

The attached patch fixes a bug in JNLPClassloader that occurs when 
JNLPClassloader tries to load nested jars in nested directories.

To reproduce the issue:
$ javaws http://dnld0.sparkom.com/sparkangels/sangels/sparkangels.jnlp
[snip]
Caused by: java.lang.NoClassDefFoundError: sparkangels/vb
         at com.sparkom.launcher.Main.main(Unknown Source)
         ... 6 more
[snip]

ChangeLog:
2009-06-29  Omair Majid  <omajid at redhat.com>

     * rt/net/sourceforge/jnlp/resources/Messages.properties:
     Add RNestedJarExtration.
     * rt/net/sourceforge/jnlp/runtime/JNLPClassLoader.java
     (activateJars): Create any needed subdirectories for nested jars.

Any suggestions?

Cheers,
Omair
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