We do not need readpassphrase from openssh

When building tar for linux, just disable HAVE_READPASSPHRASE
in config_freebsd.h and libarchive will provide for readpassphrase
Otherwise the two conflict.

lib/libarchive/config_freebsd.h

@@ -166,8 +166,10 @@
 #define HAVE_READDIR_R 1
 #define HAVE_READLINK 1
 #define HAVE_READLINKAT 1
+#ifndef __linux__
 #define HAVE_READPASSPHRASE 1
 #define HAVE_READPASSPHRASE_H 1
+#endif
 #define HAVE_REGEX_H 1
 #define HAVE_SELECT 1
 #define HAVE_SETENV 1

tools/build/Makefile

@@ -209,17 +209,6 @@ SRCS+=	progname.c
 # Stub implementations of fflagstostr/strtofflags
 SRCS+=	fflags.c
 
-# tar needs readpassphrase
-# the version from openssh is already "portable"
-# but we need to take care with .PATH as we
-# do not want getopt_long.c from crypto/openssh/openbsd-compat
-# and we do not want readpassphrase.c from libc/gen
-.PATH: ${SRCTOP}/crypto/openssh
-OBJS_SRCS_FILTER= T R
-SRCS+=	openbsd-compat/readpassphrase.c
-
-INCS+=		${SRCTOP}/crypto/openssh/openbsd-compat/readpassphrase.h
-
 .endif # ${MAKE.OS} == "Linux"
 
 .if ${.MAKE.OS} == "Darwin"

tools/build/cross-build/include/linux/includes.h

@@ -1,4 +0,0 @@
-#include <sys/cdefs.h>
-#include <paths.h>
-
-#define DEF_WEAK(a)