Bug 37197 Basepath for relative pathes in JAR-exporter
The basepath for the JAR-exporter is the eclipse-install-directory. I prefer it to be the root of the project (the description is saved in), so that relative pathes end inside the project. Now: <jardesc> <jar path="workspace/projectdir/jar.jar"/> Desired: <jardesc> <jar path="jar.jar"/> Reason: To make the jardesc-files portable for shared projects
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/jarpackager/JarPackageData.java
* @return an array of <code>IPackageFragment</code>
	 */
	public IPackageFragment[] getPackagesToSeal() {
		if (fPackagesToSeal == null)
			return new IPackageFragment[0];
		else
			return fPackagesToSeal;
	}
	/**
	 * Gets the packages which should explicitly be unsealed.
	 * The following entry will be added to the manifest file for each package:
	 * Name: <name of the package>
	 * Sealed: false
	 * <p>
	 * This should only be used if the JAR itself is sealed.
	 * </p>
	 * 
	 * @return an array of <code>IPackageFragment</code>
	 */
	public IPackageFragment[] getPackagesToUnseal() {
		if (fPackagesToUnseal == null)
			return new IPackageFragment[0];
		else
			return fPackagesToUnseal;
	}
	/**
	 * Set the packages which should explicitly be unsealed.
	 * The following entry will be added to the manifest file for each package:
	 * Name: <name of the package>
	 * Sealed: false