Fixed Bugzilla bug #235: Define the macro _PR_HAVE_SOCKADDR_LEN to

indicate that struct sockaddr_in on BSD/OS has a sa_len field.
The code in unix.c checks this macro.  We acknowledge Bert Driehuis
<driehuis@playbeing.com> for reporting the bug and suggesting a fix.

nsprpub/pr/include/md/_bsdi.h

@@ -36,6 +36,7 @@
 #define USE_DLFCN
 #define HAVE_BSD_FLOCK
 #define NEED_TIME_R
+#define _PR_HAVE_SOCKADDR_LEN
 
 #if defined(BSDI_2)
 #define PROT_NONE 0x0