ENHANCEMENT: increasing Crux robustness allowing duplicated classpaths references

git-svn-id: http://crux-framework.googlecode.com/svn@5022 a5d2bbaa-053c-11de-b17c-0f1ef23b492c
ENHANCEMENT: calling open or close event in the right time

git-svn-id: http://crux-framework.googlecode.com/svn@5023 a5d2bbaa-053c-11de-b17c-0f1ef23b492c
ENHANCEMENT: adding documentation commentary

git-svn-id: http://crux-framework.googlecode.com/svn@5024 a5d2bbaa-053c-11de-b17c-0f1ef23b492c