Removed the CKTvoltCurNode flag, since in this branch the KCL Verification methodology is applied to every node
Merge remote branch 'origin/new_kirchhoff-4' into new_kirchhoff-4
Fixed a very dangerous bug in the KCL Verification, which was inserted in a previous commit
Added a string to signal that KCL Verifcation is enabled in the NGSPICE header