Fetch connection list API

[rahulp13]

Implement the getConnectionList API that can retrieve the list of all connections at once including those within loops, by instantiating the model.

[adeas31]

@perost is better candidate for reviewing this.

[perost]

Please add at least some simple testcase in testsuite/openmodelica/interactive-API too, otherwise we might break the API by accident and not notice it.

Also, what do you want this API for?

[rahulp13]

I have an application with several components in an array, requiring exact connection info on which components in the array are connected. Also, getting all the connections at once might be better.

[adrpo]

Ouch, it seems we did not merge this before the NFFlatten changed.
@rahulp13 or @perost can you fix the conflicts so we can merge this one?

[perost]

Ouch, it seems we did not merge this before the NFFlatten changed. @rahulp13 or @perost can you fix the conflicts so we can merge this one?

I think I managed to fix the conflict, and I also fixed the if-statement added to flatten since it included too much (the execstat and dumpFlatModelDebug for flatten shouldn't depend on the flag for handling connections).

[adrpo]

@perost thanks, I had a look also, it seems OK.