Description:
------------
The following tests were all ported from 5.3 and behave differently 
on 6.0. The key issue is that they all produce extra notices:

Notice: fwrite(): 1500 character unicode buffer downcoded for binary 
stream runtime_encoding in %s on line %d

Following a discussion on internals it was felt these show unfinished 
code in the area of the unicode streams implementation. So the tests 
all show the expected output without the notices and have been marked 
with an XFAIL section so that they don't show up as failures.

ext/standard/tests/file/copy_variation18.phpt
ext/standard/tests/file/disk_free_space_error
ext/standard/tests/file/disk_total_space_basic.phpt
ext/standard/tests/file/disk_total_space_error.phpt
ext/standard/tests/file/feof_basic.phpt
ext/standard/tests/file/fgetc_basic.phpt
ext/standard/tests/file/fgets_socket_variation1.phpt
ext/standard/tests/file/fgets_socket_variation2.phpt
ext/standard/tests/file/file_get_contents_basic.phpt
ext/standard/tests/file/file_get_contents_error.phpt
ext/standard/tests/file/file_get_contents_variation1.phpt
ext/standard/tests/file/file_get_contents_variation2.phpt
ext/standard/tests/file/file_get_contents_variation3.phpt
ext/standard/tests/file/file_get_contents_variation4.phpt
ext/standard/tests/file/file_get_contents_variation5.phpt
ext/standard/tests/file/file_get_contents_variation6.phpt
ext/standard/tests/file/file_get_contents_variation7-win32.phpt
ext/standard/tests/file/file_get_contents_variation7.phpt
ext/standard/tests/file/file_put_contents_variation1.phpt
ext/standard/tests/file/file_put_contents_variation3.phpt
ext/standard/tests/file/file_put_contents_variation4.phpt
ext/standard/tests/file/file_put_contents_variation5.phpt
ext/standard/tests/file/file_put_contents_variation6.phpt
ext/standard/tests/file/file_put_contents_variation9.phpt
ext/standard/tests/file/file_variation8-win32.phpt
ext/standard/tests/file/file_variation8.phpt
ext/standard/tests/file/file_variation9.phpt
ext/standard/tests/file/fopen_variation10-win32.phpt
ext/standard/tests/file/fopen_variation11-win32.phpt
ext/standard/tests/file/fopen_variation12.phpt
ext/standard/tests/file/fopen_variation13.phpt
ext/standard/tests/file/fopen_variation14.phpt
ext/standard/tests/file/fopen_variation14-win32.phpt
ext/standard/tests/file/fopen_variation15.phpt
ext/standard/tests/file/fopen_variation15-win32.phpt
ext/standard/tests/file/fopen_variation19
ext/standard/tests/file/fopen_variation5.phpt
ext/standard/tests/file/fopen_variation6.phpt
ext/standard/tests/file/fopen_variation7.phpt
ext/standard/tests/file/fopen_variation8.phpt
ext/standard/tests/file/fopen_variation9.phpt
ext/standard/tests/file/fread_fwrite_basic.phpt
ext/standard/tests/file/fseek_dir_basic.phpt
ext/standard/tests/file/fseek_variation3.phpt
ext/standard/tests/file/ftruncate_error.phpt
ext/standard/tests/file/parse_ini_file_variation6-win32.phpt
ext/standard/tests/file/parse_ini_file_variation6.phpt
ext/standard/tests/file/readfile_variation4.phpt
ext/standard/tests/file/readfile_variation5.phpt
ext/standard/tests/file/readfile_variation6.phpt
ext/standard/tests/file/readfile_variation7.phpt
ext/standard/tests/file/readfile_variation8-win32.phpt
ext/standard/tests/file/readfile_variation9.phpt
ext/standard/tests/file/touch_basic.phpt
ext/standard/tests/file/touch_basic-win32.phpt
ext/standard/tests/file/touch_variation2.phpt