randaut: rename -S as -Q for consistency
This way -S means --state-based-acc like with other tools producing automata. This fixes #82. * src/bin/randaut.cc: Rename -S as -Q, rename --state-acc as --state-based-acc (with --sbacc as a synonym), and declare -S as the short version of --state-based-acc. * doc/org/autfilt.org, doc/org/oaut.org, doc/org/randaut.org, src/tests/isomorph.test, src/tests/randaut.test, src/tests/randtgba.test, src/tests/readsave.test, src/tests/uniq.test, wrap/python/tests/randaut.ipynb: Adjust all calls to randaut.
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