Log Message:
Update pear-Net_Sieve to 1.1.7.
Based on PR#42680 by Wen Heping.
While here, set LICENSE and marked as user-destdir ready.

1.1.7
Changelog:

* Fixed STARTTLS support (Bug #14205).
* Added connect options and EXTERNAL authentication

1.1.6
Changelog:

* Fixed Bug #9273
* Fixed copy/paste error in CRAM and DIGEST authentication error case.

1.1.5
Changelog:

* Fixed Bug connect() bug
* Fixed Request #8071

1.1.4
Changelog:

* Fixed Bug #8452 Unterminated read loop
* Fixed Bug #7845 Add mbstring support
* Added Request #8071 Enable the ability to toggle TLS support if available.
* Added Request #8453 Clean up PHPDoc and comments

1.1.3
Changelog:

* Correctly Fixed Bug #3519 Net_Sieve w/ externally established sockets
* Fixed Bug #7197 getScript() truncates long scripts
* Added PHPUnit2 regression test script

1.1.2
Changelog:

* Fixed Request #4053 Added STARTTLS support for PHP 5.1 and above
* Fixed Bug #3519 Net_Sieve w/ externally established sockets
* Fixed Bug #4794 drops protocol prefix, e.g. "ssl://" in referrals
* Fixed STARTTLS detection
* Allow $options[] to be passed to Net_Socket