[krbdev.mit.edu #2355] krb5_change_set_password should either have prototype of be declared static

[Ezra Peisach via RT]

In lib/krb5/os/changepw, krb5_change_set_password was added. 

This looks and smells like an internal handler for krb5_set_password and
krb5_change_password. 

krb5_change_set_password is not exported under windows...
It is not used in the tree...

It should probably be declared static... - eventhough it has a
KRB5_CALLCONV in it's declaration...

	      Ezra