Bug 6672 jar no longer exported after attach source
1206 1. Create a project test. 2. Add a jar (say resources.jar) to the classpath and export the entry 3. Attach source (say resourcessrc.zip) to the jar. Notice, the jar is no longer exported - this information is discarded during the attach source process.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/SourceAttachmentBlock.java
WorkbenchHelp.setHelp(composite, new Object[] { IJavaHelpContextIds.SOURCE_ATTACHMENT_BLOCK });
		return composite;
	}
	
		
	private class SourceAttachmentAdapter implements IStringButtonAdapter, IDialogFieldListener {
		
		
		public void changeControlPressed(DialogField field) {
			attachmentChangeControlPressed(field);			
		}
		
		
		public void dialogFieldChanged(DialogField field) {
			attachmentDialogFieldChanged(field);
		}
	}
	
	private void attachmentChangeControlPressed(DialogField field) {
		if (field == fFileNameField) {
			IPath jarFilePath= chooseExtJarFile();
			if (jarFilePath != null) {
				fFileNameField.setText(jarFilePath.toString());
			}
		} else if (field == fPrefixField) {
			IPath prefixPath= choosePrefix();