rsync sometimes freezes during execution if it is run over ssh.

rsync turns on blocking I/O mode if remote shell command is rsh
(ie. matched RSYNC_RSH) to work around some broken rsh implementations
on other platforms.

The submitter of the rsh->ssh patches overloaded RSYNC_RSH for ssh.
That turns out to be a Wrong Thing.  This change implements the parallel
RSYNC_SSH.

PR:		26376
Submitted by:	adrian

net/rsync/files/ssh-patch-main.c

@@ -0,0 +1,5 @@
+--- main.c.orig	Tue Sep  5 19:46:43 2000
++++ main.c	Sat Apr  7 23:32:25 2001
+@@ -134 +134 @@
+-			cmd = RSYNC_RSH;
++			cmd = RSYNC_SSH;

net/rsync/files/ssh-patch-rsync.h

@@ -1,5 +1,8 @@
 --- rsync.h.orig	Sat Aug 19 06:10:39 2000
-+++ rsync.h	Thu Mar  8 03:31:33 2001
-@@ -75 +75 @@
--#define RSYNC_RSH "rsh"
-+#define RSYNC_RSH "ssh"
++++ rsync.h	Sat Apr  7 23:31:00 2001
+@@ -75,4 +75,5 @@
+ #define RSYNC_RSH "rsh"
+ #endif
++#define RSYNC_SSH "ssh"
+ 
+ #include <sys/types.h>