parallel/unittest/wanted-results/sem01

### Test mutex. This should not mix output
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done
### Test default id = --id `tty` and --semaphorename
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done
### Test semaphore 2 jobs running simultaneously
job1
job2
job1
job2
done
### Test if parallel invoked as sem will run parallel --semaphore
job1
job2
job1
job2
done
### Test similar example as from man page
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done 0.1
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done 0.5
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done 0.2
done 0.3
done 0.4
### BUG: Test --fg followed by --bg
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