Build failure for evbarmv6hf due to new OpenSSH

[Rin Okuyama <rokuyama.rk%gmail.com@localhost>]

Hi,

Build for evbarmv6hf{,eb} fails due to collision of symbol tilde_expand b/w
libedit and new libopenssh:

----
#      link  obj.evbarm-earmv6hfeb/ramdiskbin
/build/tools/lib/gcc/armv6eb--netbsdelf-eabihf/10.3.0/../../../../armv6eb--netbsdelf-eabihf/bin/ld: /build/dest/evbarm-earmv6hfeb/usr/lib/libssh.a(misc.o): in function `tilde_expand':
misc.c:(.text+0x2364): multiple definition of `tilde_expand'; /build/dest/evbarm-earmv6hfeb/usr/lib/libedit.a(readline.o):readline.c:(.text+0x3544): first defined here
collect2: error: ld returned 1 exit status
----

tilde_expand() in libedit should be global for compatibility with readline.
Mangle OpenSSH one, which cannot be static unfortunately?

----
--- crypto/external/bsd/openssh/dist/misc.h	2 Sep 2021 11:26:18 -0000	1.22
+++ crypto/external/bsd/openssh/dist/misc.h	3 Sep 2021 09:41:16 -0000
@@ -45,6 +45,11 @@ struct ForwardOptions {
 
 /* misc.c */
 
+#ifdef __NetBSD__
+/* XXX avoid collision with libedit/readline */
+#define	tilde_expand	openssh_tilde_expand
+#endif
+
 char	*chop(char *);
 void	 rtrim(char *);
 void	skip_space(char **);
----

Thanks,
rin