#792: validate 'name', 'tmp_name' for 'UTF-8'
#792: load_dataset.php, add 'else' statement to provide error message
#792: load_dataset.php, set 'flag_syntax= false' in else statement
#792: load_dataset.php, initialize 'flag_utf8'
#792: load_dataset.php, change 'flag_syntax' -> 'flag_utf8'
#792: load_dataset.php, check 'flag_utf8'
Merge pull request #805 from jeff1evesque/php_load_dataset

#792: Validate for unicode string in 'load_dataset.php'