Tests on Windows with URIish fail

The reason is that URIish(URL) and URIish(String) make different parsing
of path / rawPath with regard to drive letters. /C:/... for URL and
C:/... for String. This patch fixes the issue.

Change-Id: I8e2013fff30b7bb198ff733c038e21366667b8a0
Signed-off-by: Ivan Motsch <ivan.motsch@bsiag.com>

org.eclipse.jgit/src/org/eclipse/jgit/transport/URIish.java

@@ -376,8 +376,10 @@ public class URIish implements Serializable {
 	public URIish(final URL u) {
 		scheme = u.getProtocol();
 		path = u.getPath();
+		path = cleanLeadingSlashes(path, scheme);
 		try {
 			rawPath = u.toURI().getRawPath();
+			rawPath = cleanLeadingSlashes(rawPath, scheme);
 		} catch (URISyntaxException e) {
 			throw new RuntimeException(e); // Impossible
 		}