tests: add tests for ipc syscalls decoding

* tests/ipc_msg.c: New file.
* tests/ipc_sem.c: Likewise.
* tests/ipc_shm.c: Likewise.
* tests/ipc_msg.test: New test.
* tests/ipc_sem.test: Likewise.
* tests/ipc_shm.test: Likewise.
* tests/Makefile.am (check_PROGRAMS): Add ipc_msg, ipc_sem, and ipc_shm.
(TESTS): Add ipc_msg.test, ipc_sem.test, and ipc_shm.test.
* tests/.gitignore: Add ipc_msg, ipc_sem, and ipc_shm.
8 files changed