printxval: support more architectures

* configure.ac: Define SIZEOF_LONG_LONG.
* util.c (printllval): Handle all architectures with sizeof(long) > 4
and sizeof(long) == sizeof(long long).
diff --git a/configure.ac b/configure.ac
index 28bf86c..c4896f3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -298,6 +298,7 @@
 	fi)
 
 AC_CHECK_SIZEOF([long])
+AC_CHECK_SIZEOF([long long])
 AC_CHECK_SIZEOF([rlim_t],,[#include <sys/resource.h>])
 
 AC_CHECK_HEADERS([libaio.h], [