Fixed issue with const failed BEs under SEQ which are triggered by FDEP

[volkm]

Needed to check if a previously disabled dependency could be enabled through the failure of a BE under a SEQ.

Additional changes:

• added test case for the issue
• moved function getDynamicBehavior() from DFT to FDEPConflictFinder
• use beType instead of type() for BEs,

[sjunges]

I scrolled through this and I have no comments ;-) feel free to merge

[volkm]

Thanks for taking a look.