syscalls/pidfd_send_signal01

Add testcase to check if pidfd_send_signal() can provide
the same functionality as rt_sigqueueinfo().

Signed-off-by: Christian Amann <camann@suse.com>
Signed-off-by: Petr Vorel <pvorel@suse.cz>
diff --git a/configure.ac b/configure.ac
index 5ecc927..65fc2a2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -71,6 +71,7 @@
     mkdirat \
     mknodat \
     openat \
+    pidfd_send_signal \
     preadv \
     preadv2 \
     profil \
@@ -238,6 +239,7 @@
 fi
 AC_DEFINE_UNQUOTED(NUMA_ERROR_MSG, ["$numa_error_msg"], [Error message when no NUMA support])
 
+
 LTP_CHECK_SYSCALL_PERF_EVENT_OPEN
 LTP_CHECK_SYSCALL_QUOTACTL
 LTP_CHECK_SYSCALL_SIGNALFD