Created function decleration_global_variables.
Created function decleration_global_variables.


Former-commit-id: cf81c2ecd508d0bb400f7023e38af56cd69461f6
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox