Bug#894290: gradle should raise the source/target level to the minimum supported by the default JDK

[Adrian Bunk]

Package: gradle
Version: 3.4.1-3
Severity: serious
Control: affects -1 src:libsejda-eventstudio-java src:mockito

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/libsejda-eventstudio-java.html
https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/mockito.html

error: Source option 1.5 is no longer supported. Use 1.6 or later.
error: Target option 1.5 is no longer supported. Use 1.6 or later.

18:48 < bunk> ebourg: gradle seems to work now with Java 9. Is gradle supposed to also raise the source/target level of the package to be built, or are 
              these bugs in the affected packages?
18:48 < bunk> Example: https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/mockito.html
18:50 < ebourg> bunk: Good catch, Gradle should indeed raise the source/target level as well.
18:50 < ebourg> to 1.7 at least


The severity might appear inflated, but there should be an RC bug
somewhere for FTBFS issues.