Removed erroneous qmake -makefile option. MACOSX, look for gpl3.txt in ../doc directory.

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user: Michael Guravage <michael.guravage@cwi.nl>
branch 'default'
changed src/ChangeLog
changed src/Makefile
changed src/TutorialCode/Tutorial0/ChangeLog
changed src/TutorialCode/Tutorial0/Makefile
changed src/TutorialCode/Tutorial1A/ChangeLog
changed src/TutorialCode/Tutorial1A/Makefile
changed src/TutorialCode/Tutorial1B/ChangeLog
changed src/TutorialCode/Tutorial1B/Makefile
changed src/TutorialCode/Tutorial1C/ChangeLog
changed src/TutorialCode/Tutorial1C/Makefile
changed src/TutorialCode/Tutorial1D/ChangeLog
changed src/TutorialCode/Tutorial1D/Makefile
changed src/TutorialCode/Tutorial2/ChangeLog
changed src/TutorialCode/Tutorial2/Makefile
changed src/TutorialCode/Tutorial3/ChangeLog
changed src/TutorialCode/Tutorial3/Makefile
changed src/TutorialCode/Tutorial4/ChangeLog
changed src/TutorialCode/Tutorial4/Makefile
changed src/TutorialCode/Tutorial5/ChangeLog
changed src/TutorialCode/Tutorial5/Makefile
changed src/VirtualLeaf.pro
changed src/build_models/ChangeLog
changed src/build_models/Makefile