8153250: java.io.File does not handle Windows paths of the form "D:" (no path) correctly
Summary: When resolving a child to a parent, do not insert a file separator for Windows directory-relative paths
Reviewed-by: rriggs
8152272: Unable to create temporary file using createTempFile method if System.getProperty(file.separator) is used
Summary: Normalize the name component of the temporary file path
Reviewed-by: rriggs