With emojis, phoneme strings can be very long

TranslateWord2 passes translator2 as tr to TranslateWord which may call
TranslateWord3, SpeakIndividualLetters, TranslateLetter, which was calling
SetTranslator2 again, thus freeing the very tr being used. Make that
latter use another translator.

* Add: fuzzer files and modifications in config & compil
* add configure.ac change
* add minimize-corpus.sh
* add fuzzing directory and readme
* add to check if CC support libfuzzer
* Make workflow dump the crash POC
* Add debugging information
* Run fuzzing only once a week for now

Co-authored-by: kmamadoudram <[email protected]>
Co-authored-by: yocvito <[email protected]>
Co-authored-by: Samuel Thibault <[email protected]>

Map phoneme table ms rules to id rules

As this is the behaviour when building eSpeak

we should do that on every release.

Issue #1185

It seems that reprotest is breaking the gradle build

Enhance detection of gradle

When there are language switches, when we rewind to the start of the
phoneme list we have to reset the phoneme table back.

This avoids some branching that depends on undefined values, caught by
valgrind in the case e.g. of an emoji substitution that contains a
language switch.

Ref #874

IsLetterGroup looks for heading \0, so the padding also needs to include
an \0.

So valgrind can potentially catch e.g. missing \0.

These don't actually need to survive function exit.

So we know they are just tables, get protected from overflows, and get shared between processes

This would have caught #1200

Fixes #1200