merged r1171: fixed: unrar may sometimes fail with message "no files to extract"

git-svn-id: svn://svn.code.sf.net/p/nzbget/code/branches/14@1173 b1b436ca-2b18-4f33-ab5d-510789358d54
updated ChangeLog

git-svn-id: svn://svn.code.sf.net/p/nzbget/code/branches/14@1174 b1b436ca-2b18-4f33-ab5d-510789358d54
updated version string (preparing to release 14.1)

git-svn-id: svn://svn.code.sf.net/p/nzbget/code/branches/14@1175 b1b436ca-2b18-4f33-ab5d-510789358d54