Added/replaced several macosx installation files. In modelcatalogue.cpp: move from "bin" directory to root application folder.

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user: Michael Guravage <michael.guravage@cwi.nl>
branch 'default'
changed src/ChangeLog
changed src/VirtualLeaf-install-macosx/01virtualleaf-contents.xml
changed src/VirtualLeaf-install-macosx/01virtualleaf.xml
changed src/VirtualLeaf-install-macosx/02models-contents.xml
changed src/VirtualLeaf-install-macosx/02models.xml
changed src/VirtualLeaf-install-macosx/03leaves-contents.xml
changed src/VirtualLeaf-install-macosx/03leaves.xml
changed src/VirtualLeaf-install-macosx/index.xml
changed src/modelcatalogue.cpp