Bug#882525: netbeans FTBFS with jaxb 2.3.0

[Emmanuel Bourg]

Control: tags -1 + fixed-upstream
Control: severity -1 important

The issue has been fixed upstream but hasn't been backported to the
2.3.0 branch yet. I'm lowering the severity since a workaround seems to
exist (by forking the JVM at the <xjc> task level).