tests: add a test for select syscall decoding

Convert test/select.c into a regular test.

* test/Makefile (PROGS): Remove select.
* test/.gitignore: Likewise.
* test/select.c: Rewrite to ...
* tests/select.c: ... new file.
* tests/select.awk: New file.
* tests/select.test: New test.
* tests/Makefile.am (check_PROGRAMS): Add select.
(TESTS): Add select.test.
(EXTRA_DIST): Add select.awk.
* tests/.gitignore: Add select.
8 files changed