Fixed charset support for Pdo_Pgsql.
fix HeadLink docblock method declaration hints
Fix E_DEPRECATED message
Edit test suit about deprecated using of safe option
Fix double registration of a complex type

Zend\Soap\Wsdl\ComplexTypeStrategy\DefaultComplexType::addComplexType()
stores already added classes under the methods argument `$type`.

Therefore a class with preceding backslash is treated like another complextype
than the same class without given backslash. As a result the xsd:ComplexType
definition is found twice (with exactly the same name) in the generated wsdl.
Fixes #6188
added missing full stop
Merge pull request #6033 from hschletz/fix-db-charset-support

Fixed charset support for Pdo_Pgsql.
Merge branch 'hotfix/6033'

Close #6033
Update StringTrim to allow '0' as charlist

Update Zend\Filter\StringTrim to allow '0' as charlist
Add Test for empty charlist in StringTrim
Add fail test case
Fix delegators property
Fix delegators usage
Add tests case for the zend\servicemanager\config extension
update inheritance of service manager config
Update StringTrimTest.php
Merge branch 'hotfix/#6184-deprecated-mongodb-flags-replacement'

Close #6184
Merge branch 'doc/#6254-per-component-contributing.md'

Close #6254
Close #6188
#6223 - cs (alignment)