Add support for the new SFTP repository functionality in SWORD.

git-svn-id: svn+ssh://svn.code.sf.net/p/gnomesword/code/trunk@4442 da23c209-522a-4b7c-92e9-24af42be4764
Updating ChangeLog.

git-svn-id: svn+ssh://svn.code.sf.net/p/gnomesword/code/trunk@4443 da23c209-522a-4b7c-92e9-24af42be4764