testing: Add standard interface to almost all testings

testing/testing_zcesca.c

testing/testing_zgeadd.c

testing/testing_zgelqf.c

testing/testing_zgelqf_hqr.c

testing/testing_zgels.c

testing/testing_zgels_hqr.c

testing/testing_zgenm2.c

testing/testing_zgepdf_qdwh.c

testing/testing_zgeqrf.c

testing/testing_zgeqrf_hqr.c

testing/testing_zgesv.c

testing/testing_zgetrf.c

testing/testing_zgetrs.c

testing/testing_zgram.c

testing/testing_zlacpy.c

testing/testing_zlascal.c

testing/testing_zlauum.c

testing/testing_zplrnk.c

testing/testing_zsysv.c

testing/testing_zsytrf.c