org.xcsoar hosts its own git repo. Self-hosted git repos can be flaky, and
they are blocked by the Guardian Project jenkins server, so use an app from
github.com instead.
# Ant, submodules and custom prebuild/build
../fdroid build --stop app.openconnect:959
# Custom build (make)
-../fdroid build --stop org.xcsoar:101
+../fdroid build --stop com.amaze.filemanager:29
# Uses verification
../fdroid build --stop info.guardianproject.checkey:101
# Gradle with retrolambda (JDK7 and JDK8)