Reinstate VG_ARCH_ALL, erroneously removed by r5496.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@5540 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/configure.in b/configure.in
index 6316ed1..be46a73 100644
--- a/configure.in
+++ b/configure.in
@@ -114,6 +114,9 @@
 AC_MSG_CHECKING([for a supported CPU])
 AC_SUBST(VG_ARCH)
 
+AC_SUBST(VG_ARCH_ALL)
+VG_ARCH_ALL="amd64 ppc32 ppc64 x86"
+
 AC_SUBST(VALT_LOAD_ADDRESS)
 
 case "${host_cpu}" in