replace vector_iter with vectorIter
replace vector_iter with vectorIter

cellml/libcellml,nickerso/libcellml,libcellml/buildbot-testing,cellml/libcellml,hsorby/libcellml,MichaelClerx/libcellml,hsorby/libcellml,hsorby/libcellml,cellml/libcellml,cellml/libcellml,libcellml/buildbot-testing,nickerso/libcellml,hsorby/libcellml,nickerso/libcellml,MichaelClerx/libcellml,nickerso/libcellml,MichaelClerx/libcellml