Update preprocessor and ragconnect-compiler.

- make compiler jastaddCompliant
- allow multiple input grammars and connect files
- compiler output are (possibly modified) input grammars, and always three files (MqttHandler.jadd, RagConnect.jadd and RagConnect.relast)
2 jobs for 35-cleanup in 1 minute and 28 seconds (queued for 3 seconds)
Name Stage Failure
build Build
> Process 'command '/usr/local/openjdk-8/bin/java'' finished with non-zero exit value 1

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BUILD FAILED in 1m 14s
ERROR: Job failed: exit code 1