enh #89, support for SOAP headers in WSDL generator
Merge branch 'master' into 89-soap-header

Conflicts:
	CHANGELOG
Merge branch 'master' into 89-soap-header

Conflicts:
	CHANGELOG
Merge branch 'master' into 89-soap-header
Merge PR #2141 branch '89-soap-header' of https://github.com/nineinchnick/yii into nineinchnick-89-soap-header2

* '89-soap-header' of https://github.com/nineinchnick/yii:
  enh #89, support for SOAP headers in WSDL generator