configure.ac: More descriptive NUMA error message

Some people were confused and searched for libnuma.so.2,
which does not exist.

Required is libnuma.so.1, but with LIBNUMA_API_VERSION >= 2.
The API version is tighten to libnuma version in git, but that has
nothing to do with library soname version, which is still 1.0.0.

Reviewed-by: Cyril Hrubis <chrubis@suse.cz>
Signed-off-by: Petr Vorel <pvorel@suse.cz>

Author: pevik

configure.ac

@@ -347,7 +347,7 @@ LTP_CHECK_SYSCALL_FCNTL
 
 if test "x$with_numa" = xyes; then
 	LTP_CHECK_SYSCALL_NUMA
-	numa_error_msg="test requires libnuma >= 2 and it's development packages"
+	numa_error_msg="test requires libnuma development packages with LIBNUMA_API_VERSION >= 2"
 else
 	numa_error_msg="NUMA support was disabled during build"
 fi