[icedtea-web] RFC: find jars based on Class-Path entry in manifest

[Omair Majid]

Hi,

The attached patch adds support in icedtea-web for finding other jars 
using the Class-Path entry in a jar's manifest file.

An applet the demonstrates the bug is located at 
http://jung.sourceforge.net/applet/showlayouts2.html

The logic of the patch is quite similar to the already-implemented case 
for jar indices: when a class cannot be found, we will download jars 
specified in the Class-Path and search there too.

ChangeLog:
2011-04-14  Omair Majid  <omajid at redhat.com>

     * netx/net/sourceforge/jnlp/runtime/JNLPClassLoader.java: Add new
     private variable classpathsInManifest.
     (activateJars): When adding jar index, also add Class-Path entries
     from the Manifest.mf file in the jar.
     (loadClass): Search for jars specified in classpaths before looking
     for entries in jar index.
     (addNewJar): New method refactored from loadClass.

Any thoughts or comments?

Cheers,
Omair
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