nopen() now loops on EDEADLK/EDEADLOCK on FreeBSD, necessary for smbfs

mounted shared (now why is this different than NFS or local file systems?
and why is it different than smbfs mounted shares on Linux?).

src/sbbs3/nopen.c

@@ -55,7 +55,7 @@ int nopen(const char* str, int access)
 	if(!(access&O_TEXT))
 		access|=O_BINARY;
     while(((file=sopen(str,access,share,S_IREAD|S_IWRITE))==-1)
-        && (errno==EACCES || errno==EAGAIN) && count++<LOOP_NOPEN)
+        && (errno==EACCES || errno==EAGAIN || errno==EDEADLOCK) && count++<LOOP_NOPEN)
         if(count)
             mswait(100);
     return(file);