Cleanup OpenMP codelet and doc

compute/zbuild.c

compute/zgeadd.c

compute/zgelqf.c

compute/zgelqf_param.c

compute/zgelqs.c

compute/zgelqs_param.c

compute/zgels.c

compute/zgels_param.c

compute/zgemm.c

compute/zgeqrf.c

compute/zgeqrf_param.c

compute/zgeqrs.c

compute/zgeqrs_param.c

compute/zgesv_incpiv.c

compute/zgesv_nopiv.c

compute/zgesvd.c

compute/zgetrf_incpiv.c

compute/zgetrf_nopiv.c

compute/zgetrs_incpiv.c

compute/zgetrs_nopiv.c