SFTP: Replace incorrect comment about filesize. There is no 4 GiB limit.
Restore compatibility with PHP 5.6.1 by using explicit array indexes.

This seems to be caused by the resolution of PHP Ticket 67985.
Merge pull request #493 from bantu/fix-491

Restore compatibility with PHP 5.6.1 by using explicit array index.

* bantu/fix-491:
  Restore compatibility with PHP 5.6.1 by using explicit array indexes.
SFTP: Add truncate() to size() test for files larger than 4 GiB.
Merge pull request #492 from bantu/sftp-large-file-comment

SFTP: Replace incorrect comment about filesize. There is no 4 GiB limit.

* bantu/sftp-large-file-comment:
  SFTP: Replace incorrect comment about filesize. There is no 4 GiB limit.
SFTP: Use hexdec() and bin2hex() for filesize calculation.
Merge pull request #490 from bantu/sftp-large-files

SFTP: Add truncate() to size() test for files larger than 4 GiB.

* bantu/sftp-large-files:
  SFTP: Add truncate() to size() test for files larger than 4 GiB.
Merge pull request #494 from bantu/sftp-filesize-hexdec

SFTP: Use hexdec() and bin2hex() for filesize calculation.

* bantu/sftp-filesize-hexdec:
  SFTP: Use hexdec() and bin2hex() for filesize calculation.
Merge pull request #1 from phpseclib/master

update