[krbdev.mit.edu #8326] hostrealm code won't compile in debug mode using Solaris Studio C

[Greg Hudson via RT]

Ah, I forgot that the Solaris compiler builds static inline functions 
and creates dependencies even if they aren't used.  So the dependency 
just comes from zapfree() and zapfreestr() in k5-int.h.  I will make a 
pull request with this change.