Fix stimulus action (feature button toggleState)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5484 43c1dc8c-776e-4df2-8ef1-6e829299be21
Used AUTO_RELEASE in most sccp_devstate, sccp_featureButton, sccp_features functions. Finding three (less frequent) refcount issues along the way

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5485 43c1dc8c-776e-4df2-8ef1-6e829299be21
Show stimulusstatus in debug entry when handling stimulus feature buttons

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5486 43c1dc8c-776e-4df2-8ef1-6e829299be21
Used AUTO_RELEASE in sccp_hint.

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5487 43c1dc8c-776e-4df2-8ef1-6e829299be21
Used AUTO_RELEASE in sccp_hint.

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5488 43c1dc8c-776e-4df2-8ef1-6e829299be21