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
/**
	 * Tells whether the source folder hierarchy is used.
	 * <p>
	 * Using the source folder hierarchy only makes sense if
	 * java files are but class files aren't exported.
	 * </p>
	 * 
	 * @return	<code>true</code> if source folder hierarchy is used
	 */
	public boolean useSourceFolderHierarchy() {
		return fUseSourceFolderHierarchy;
	}
	
	/**
	 * Set the option to export the source folder hierarchy.
	 * 
	 * @param state the new state
	 */
	public void setUseSourceFolderHierarchy(boolean state) {
		fUseSourceFolderHierarchy= state;
	}
	
	/**
	 * Gets the location of the JAR file.
	 * This path is normally external to the workspace.
	 * 
	 * @return the path representing the location of the JAR file
	 */
	public IPath getJarLocation() {
		return fJarLocation;