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.
Fix: CS of closure
Fix invalid step error caused by DST
remove unused use
CS
#6245 - single quotes for string values without interpolation
#6245 - adding coverage and group annotations
Merge branch 'hotfix/#6245-invalid-date-step-error-with-dst'

Close #6245
Fixes #6188
added missing full stop
#6238 - PSR-2 expects one parameter per line in function calls
Merge branch 'cs/abstract-controller-test-case-closure-braces'

Close #6238
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