removed countingcharacter and ordernum_tol, superceded by forder

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/datatable@1155 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
countingcharacter.c renamed chmatch.c

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/datatable@1156 edb9625f-4e0d-4859-8d74-9fd3b1da38cb