fix modify_block_resistor_tr().
add sync in the end of each time step.
fix bug in push bd_nodes().
reset vol values in iter 0 of each time step.
working on transient steps.
before comment solve_eq_sp.
make 1 time step works.
can walk through all time steps, need to check correctness.
fix a bug in stamp_block_resistor_tr.
add tran.print().
modify circuit.cpp and .h.
comment Lx part, which is memory consuming.
delete comment of DC code.
release bnew_temp.
add free of Li in the end of circuit.
delete replist and mergelist.
delete a set of point to CK.
clear boundary_netlist.
add several more comment sentences.
after add git reduce diff.