ssize_t is only defined in stddef.h on SunOS4

[Alexandre Oliva]

Actually, it is not defined even in stddef.h :-(

I'll AC_CHECK_TYPE it, along with in_addr_t.  I'll post the patch as a
followup to the first in_addr_t patch.

-- 
Alexandre Oliva http://www.dcc.unicamp.br/~oliva IC-Unicamp, Bra[sz]il
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oliva@{gnu.org,kaffe.org,{egcs,sourceware}.cygnus.com,samba.org}
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