add test of gmail ISO-8859-2 mail receiving (#16122)

git-svn-id: http://svn.redmine.org/redmine/trunk@12903 e93f8b46-1217-0410-a6f0-8f06a7374b81
fix newline of fixture (#16122)


git-svn-id: http://svn.redmine.org/redmine/trunk@12904 e93f8b46-1217-0410-a6f0-8f06a7374b81
svn propset svn:eol-style native fixture (#16122)


git-svn-id: http://svn.redmine.org/redmine/trunk@12905 e93f8b46-1217-0410-a6f0-8f06a7374b81