UC: handling inconsistent UC_Sets and UC_RHS*

[olejandro]

Sometimes user may specify inconsistent UC_Sets and UC_RHS*. How should we handle it, apart from issuing a warning?
We could:

• drop the constraint
• make UC_Sets consistent with UC_RHS* (I believe that's what Veda does)
• make UC_RHS* consistent with UC_Sets

[olejandro]

@Antti-L do you have any advice on this?

[Antti-L]

I think a warning should be mostly quite sufficient.

• There is no need to define UC_Sets at all, because TIMES has defaults for all of them, so leaving them empty should be fine
• The user may well define the UC coefficients in a ~UC_T table, and then the UC_RHSxxx according to scenario (using TFM* tables).
• Specfically, UC_T_* and UC_TS_* should at least never be auto-generated (I hope VEDA does not do any such?)
• I don't quite see how making UC_RHS* consistent with UC_Sets could be done reliably.