Bug#743384: lintian: Update unknown-java-class-version to support Java 8 class version (52)

[Emmanuel Bourg <ebourg@apache.org>]

Package: lintian
Version: 2.5.22.1
Severity: normal

Hi,

Could you please support the Java 8 class version in the
unknown-java-class-version check? OpenJDK 8 is being packaged and
lintian complains about the new class version (52 for Java 8, Java 7
used 51)

Thank you,

Emmanuel Bourg