The tt(main) function defines the long options in its global tt(g_longOpts)
array. The tt(g_longOpts) and tt(g_longEnd) global variables are not declared
for general use in a header file but are declared in class specific headers
when needed. Currently that's only tt(scenario/scenario.ih).

    verbinsert(-s4 //main src/main.cc)

The simulations themselves are controlled by a tt(Simulator), having only one
public member: tt(run), performing the simulations.
