Fix constraint name mapping for inequalities.

[danieloliveira56]

Here, I refer to a set of constraints by it's cardinality. In lines 562 to 607, 4 maps are created:

• c_map: from nc to n_full_g_
• d_map: from n_d to n_full_g_
• d_l_map: from n_d_l to n_d
• d_u_map: from n_d_u to n_d

So to retrieve the name of some inequality with only lower bounds, we need to lookup it's index in n_d using d_l_map and then lookup the found index in n_full_g_ using d_map, since no map from n_d_l to n_full_g was created.

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[svigerske]

Thank you very much for digging into this.

[tkralphs]

It would be good to get the CLA stuff sorted out.