Java 8 compatibility with javax library when handling SIPs with URL encoded characters

[hmiguim]

Example:

Filename: PT%2FPT-KEEPS%2FLevel-1%2FLevel-2.zip

Running this code with Java 8 produces an error because the Unmarshaller decode the %2F instead of keeping it.

commons-ip/src/main/java/org/roda_project/commons_ip2/utils/METSUtils.java

Line 62 in b579743

return (Mets) jaxbUnmarshaller.unmarshal(metsFile.toFile());

[luis100]

Related to #117

[hmiguim]

Fix on version 2.3.2