Update version to 3.4.2

Author: atgreen

README.md

@@ -195,7 +195,7 @@ History
 
 See the git log for details at http://github.com/libffi/libffi.
 
-    3.4.1 Jun-28-21
+    3.4.2 Jun-28-21
         Add static trampoline support for Linux on x86_64 and ARM64.
         Add support for Alibaba's CSKY architecture.
         Add support for Kalray's KVX architecture.

configure.ac

@@ -2,7 +2,7 @@ dnl Process this with autoconf to create configure
 
 AC_PREREQ(2.68)
 
-AC_INIT([libffi], [3.4.1], [http://github.com/libffi/libffi/issues])
+AC_INIT([libffi], [3.4.2], [http://github.com/libffi/libffi/issues])
 AC_CONFIG_HEADERS([fficonfig.h])
 
 AC_CANONICAL_SYSTEM

doc/version.texi

@@ -1,4 +1,4 @@
 @set UPDATED 27 June 2021
 @set UPDATED-MONTH June 2021
-@set EDITION 3.4.1
-@set VERSION 3.4.1
+@set EDITION 3.4.2
+@set VERSION 3.4.2