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
private String	fManifestVersion;
	/*
	 * What to export - internal locations
	 * The list fExported* is null if fExport* is false)
	 */	
	private boolean fExportClassFiles;	
	private boolean fExportJavaFiles;		
	/*
	 * Source folder hierarchy is created in the JAR if true
	 */
	private boolean fUseSourceFolderHierarchy;
	/*
	 * Projects of which files are expored will be built if true
	 * and autobuild is off.
	 */
	private boolean fBuildIfNeeded;
	/*
	 * Leaf elements (no containers) to export
	 */
	private Object[]	fElements; 
	private IPath		fJarLocation; 
	private boolean	fOverwrite;
	private boolean	fCompress;
	
	private boolean	fSaveDescription;
	private IPath		fDescriptionLocation;