Merge back the twosided branch

compute/CMakeLists.txt

compute/pzgebrd_ge2gb.c

compute/pzgelqf.c

compute/pzgelqfrh.c

compute/pzgeqrf.c

compute/pzgeqrfrh.c

compute/pzhetrd_he2hb.c

compute/pztile2band.c

compute/pzunglq.c

compute/pzunglqrh.c

compute/pzungqr.c

compute/pzungqrrh.c

compute/pzunmlq.c

compute/pzunmlqrh.c

compute/pzunmqr.c

compute/pzunmqrrh.c

compute/zgesvd.c

compute/zheevd.c

compute/zhetrd.c

control/compute_z.h