JarEditor is not supporting other URI protocols than file

same issue again ... #779

null
Error
Mon May 12 13:41:19 CEST 2014
An internal error occurred during: "Load zip content".

java.lang.IllegalArgumentException: URI scheme is not "file"
	at java.io.File.<init>(Unknown Source)
	at bndtools.jareditor.internal.JAREntryPart$4.run(JAREntryPart.java:194)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)