tests: add rt_sigqueueinfo.test

* tests/rt_sigqueueinfo.c: New file.
* tests/rt_sigqueueinfo.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add rt_sigqueueinfo.
(TESTS): Add rt_sigqueueinfo.test.
* tests/.gitignore: Add rt_sigqueueinfo.
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 1b078e0..316cc40 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -40,6 +40,7 @@
 	ppoll \
 	readlink \
 	readlinkat \
+	rt_sigqueueinfo \
 	sched_xetattr \
 	scm_rights \
 	seccomp \
@@ -101,6 +102,7 @@
 	ipc_sem.test \
 	readlink.test \
 	readlinkat.test \
+	rt_sigqueueinfo.test \
 	sched_xetattr.test \
 	scm_rights-fd.test \
 	seccomp.test \