#6209 - Update test case so it actually tests the thing it should be testing
Fix parameter format causing duplicate mails

Recently I've experienced mails being duplicated and send to the sender when using the sendmail transport. After consulting my hosting company they told me there shouldn't been a space between "-f" and the envelope sender address. Removing the space character fixed the problem. No more duplicated mails being send to the sender.

Furthermore I tested Swiftmailer and its sendmail transport layer. Absolutely no problems with it.

Looking at the php docs there isn't a space character either, see http://www.php.net/manual/en/function.mail.php#example-3471. Furthermore I found http://stackoverflow.com/questions/4205228/basic-mail-function-php-additional-f-parameter-question and consulted the sendmail docs too: http://www.sendmail.org/~ca/email/man/sendmail.html.

However, there are other examples around with a space character: http://stackoverflow.com/questions/179014/how-to-change-envelope-from-address-using-php-mail. Are they wrong?

Since I'm not familiar with sendmail but actually trusting my hosting company I'm proposing to remove the space character.
Update SendmailTest.php
Fixes #6467
ZF-6428: authenticate() always fails on IBMi when using DB table-based
authentication.

Ensure that a lowercased zend_auth_credential_match element exists in
$resultIdentities array when the array is created.
Add Unit Tests specific to IBMi DB2 for CredentialTreatmentAdapter
logic.
Add TestConfiguration constants to control the unit tests.
Merge branch 'fix-6428' of https://github.com/clarkphp/zf2 into fix-6428
Correct a PSR-2 Code Style error I had missed before issuing PR.
Reword a few comments.
Format source code to better conform to ZF2 Coding Standards:
https://zf2-docs.readthedocs.org/en/latest/ref/coding.standard.html
Merge pull request #6510 from clarkphp/fix-6428

Fix 6428 - authenticate() always fails on IBMi when using DB table-based authentication
[#6510] Fix test setup

- Moved declaration of driver options into `setUp()` so that we can know
  constants are declared before we attempt to assign their values.
Merge branch 'hotfix/6510'

Close #6510
Ignore some files/paths when running CS checks

- Recent changes to php-cs-fixer (see
  https://github.com/fabpot/PHP-CS-Fixer/issues/422) have led to errors being
  raised that should not. This change to the php-cs-fixer configuration places
  several new paths into the "do not test" list. They will be re-instated when
  the issues are fixed.
Merge branch 'hotfix/cs-overzealousness'

Fixes #6520
[Http] Fix curl protocol version
fixed conflicted phpdoc return values (see #6511
Merge branch 'hotfix/#6512-fix-#6511-sharedeventmanager-return-values-phpdoc'

Close #6512
Close #6511
Fixes #6506 - as of zendframework/zf2@eaa78740c352cdaf0f44179204674b56b7f19ad6, `zendframework/zend-form` is required in the MVC
Merge branch 'hotfix/#6506-missing-zend-form-dependency-in-zend-mvc'

Close #6506
Fix: Undefined field
Merge branch 'fix/viewname' of github.com:samsonasik/zf2 into samsonasik-fix/viewname