c++ Segment Fault when compiling non-folded StreamingFCLayer_Batch

[Tobi-Alonso]

For StreamingFCLayer_Batch with large initializators, g++ may have a Segment fault.

g++: internal compiler error: Segmentation fault (program cc1plus)
...

clang++ stalls.

This problem disappears when applying folding. It would be useful to have Warnings from finn when array sizes pass certain limits