30203
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10933 Fixing delete raising exception post symptoms
https://pharo.fogbugz.com/f/cases/10933
10921 Smalltalk vm headlessOption returns wrong value with latest VM
https://pharo.fogbugz.com/f/cases/10921
10878 Clean un in Morphic part2
https://pharo.fogbugz.com/f/cases/10878
Diff information: http://smalltalkhub.com/mc/Pharo/Pharo30/main/Tests-MarcusDenker.553.diff http://smalltalkhub.com/mc/Pharo/Pharo30/main/System-Support-MarcusDenker.853.diff http://smalltalkhub.com/mc/Pharo/Pharo30/main/Morphic-Base-MarcusDenker.12.diff http://smalltalkhub.com/mc/Pharo/Pharo30/main/Multilingual-Tests-MarcusDenker.29.diff http://smalltalkhub.com/mc/Pharo/Pharo30/main/CompressionTests-MarcusDenker.25.diff http://smalltalkhub.com/mc/Pharo/Pharo30/main/Graphics-Tests-MarcusDenker.34.diff
