Bug#893376: mina FTBFS with openjdk-9

[Adrian Bunk]

Source: mina
Version: 1.1.7.dfsg-11
Severity: serious
Tags: buster sid

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/mina.html

...
   debian/rules override_dh_auto_build
make[1]: Entering directory '/build/1st/mina-1.1.7.dfsg'
# Build the packages
( CLASSPATH=/usr/share/java/slf4j-api.jar jh_build -J -o"-source 1.5 -target 1.5" mina-core.jar core/src/main/java/  )
find core/src/main/java/ -name *.java -and -type f -print0 | xargs -s 512000 -0 /usr/lib/jvm/default-java/bin/javac -g -cp /usr/share/java/slf4j-api.jar:debian/_jh_build.mina-core -d debian/_jh_build.mina-core -encoding ISO8859-1 -source 1.5 -target 1.5
warning: [options] bootstrap class path not set in conjunction with -source 1.5
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.
make[1]: *** [debian/rules:43: override_dh_auto_build] Error 123