Exclude 'halo' bulk elements from 'active elements'.


git-svn-id: svn://svn.code.sf.net/p/elmerfem/code/trunk@7075 04224531-1f84-46d8-96ce-875b9e37dce3
Correction for a potential memory leak ...


git-svn-id: svn://svn.code.sf.net/p/elmerfem/code/trunk@7076 04224531-1f84-46d8-96ce-875b9e37dce3