Fix mismatch of "static" attribute at declaration and definition of function.
Fix mismatch of "static" attribute at declaration and definition of function.

However, both "static" and also the GWENHYWFAR_CB macro is not yet
used consistently in all places and might need further fixing
to get rid of all "incompatible pointer type" compiler warnings.

git-svn-id: a739a095880fa3ebc46f89d9df64e20166cf4ba9@2153 70169cfe-8b10-0410-8925-dcb4b91034d8

sttts/gwenhywfar,sttts/gwenhywfar,sttts/gwenhywfar