* tests/t-common.h (xgcry_control): Use doubly nested parenthesis for
passing arguments for gcry_control instead of GCC specific variadic
macro extension.
* tests/aeswrap.c: Change xgcry_control to use doubly nested
parenthesis.
* tests/basic.c: Ditto.
* tests/bench-slope.c: Ditto.
* tests/benchmark.c: Ditto.
* tests/curves.c: Ditto.
* tests/dsa-rfc6979.c: Ditto.
* tests/fips186-dsa: Ditto.
* tests/fipsdrv.c: Ditto.
* tests/fipsrngdrv.c: Ditto.
* tests/gchash.c: Ditto.
* tests/hashtest.c: Ditto.
* tests/hmac.c: Ditto.
* tests/keygen.c: Ditto.
* tests/keygrip.c: Ditto.
* tests/mpitests.c: Ditto.
* tests/pkbench.c: Ditto.
* tests/pkcs1v2.c: Ditto.
* tests/prime.c: Ditto.
* tests/pubkey.c: Ditto.
* tests/random.c: Ditto.
* tests/rsacvt.c: Ditto.
* tests/t-convert.c: Ditto.
* tests/t-cv25519.c: Ditto.
* tests/t-ed25519.c: Ditto.
* tests/t-kdf.c: Ditto.
* tests/t-lock.c: Ditto.
* tests/t-mpi-bit.c: Ditto.
* tests/t-mpi-point.c: Ditto.
* tests/t-secmem.c: Ditto.
* tests/t-sexp.c: Ditto.
* tests/version.c: Ditto.