The string files in jdk7u-dev forest do not have UTF-16 BOM (byte order mark) in the beginning of the file:
WPTG now supports translation of .strings files, but the files were rejected due to missing BOM. I was able to manually convert the files to UTF-16 using
% iconv -f UTF-8 -t UTF-16 utf8_file > utf16_file
Refer to JDK-8014937.
The correct files have been attached. Currently, these files are blocking our automated translation drop system. We need these delivered to jdk8 and jdk7u6 as soon as possible. Thanks!