RT3548: Remove some obsolete platforms

This commit removes BEOS.

Reviewed-by: Richard Levitte <levitte@openssl.org>
diff --git a/apps/s_client.c b/apps/s_client.c
index 1a30ef2..30ea743 100644
--- a/apps/s_client.c
+++ b/apps/s_client.c
@@ -174,10 +174,6 @@
 #undef FIONBIO
 #endif
 
-#if defined(OPENSSL_SYS_BEOS_R5)
-#include <fcntl.h>
-#endif
-
 #undef PROG
 #define PROG	s_client_main
 
@@ -629,11 +625,8 @@
 	ENGINE *ssl_client_engine=NULL;
 #endif
 	ENGINE *e=NULL;
-#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
 	struct timeval tv;
-#if defined(OPENSSL_SYS_BEOS_R5)
-	int stdin_set = 0;
-#endif
 #endif
 #ifndef OPENSSL_NO_TLSEXT
 	char *servername = NULL; 
@@ -1806,7 +1799,7 @@
 
 		if (!ssl_pending)
 			{
-#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined (OPENSSL_SYS_BEOS_R5)
+#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE)
 			if (tty_on)
 				{
 				if (read_tty)  openssl_fdset(fileno(stdin),&readfds);
@@ -1866,25 +1859,6 @@
 				} else 	i=select(width,(void *)&readfds,(void *)&writefds,
 					NULL,timeoutp);
 			}
-#elif defined(OPENSSL_SYS_BEOS_R5)
-			/* Under BeOS-R5 the situation is similar to DOS */
-			i=0;
-			stdin_set = 0;
-			(void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
-			if(!write_tty) {
-				if(read_tty) {
-					tv.tv_sec = 1;
-					tv.tv_usec = 0;
-					i=select(width,(void *)&readfds,(void *)&writefds,
-						 NULL,&tv);
-					if (read(fileno(stdin), sbuf, 0) >= 0)
-						stdin_set = 1;
-					if (!i && (stdin_set != 1 || !read_tty))
-						continue;
-				} else 	i=select(width,(void *)&readfds,(void *)&writefds,
-					 NULL,timeoutp);
-			}
-			(void)fcntl(fileno(stdin), F_SETFL, 0);
 #else
 			i=select(width,(void *)&readfds,(void *)&writefds,
 				 NULL,timeoutp);
@@ -1971,7 +1945,7 @@
 				goto shut;
 				}
 			}
-#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
+#if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE)
 		/* Assume Windows/DOS/BeOS can always write */
 		else if (!ssl_pending && write_tty)
 #else
@@ -2066,8 +2040,6 @@
 #endif
 #elif defined (OPENSSL_SYS_NETWARE)
 		else if (_kbhit())
-#elif defined(OPENSSL_SYS_BEOS_R5)
-		else if (stdin_set)
 #else
 		else if (FD_ISSET(fileno(stdin),&readfds))
 #endif