Refactored IOB logic out of BuildGraphs()
Refactored IOB logic out of BuildGraphs()

azonenberg/openfpga,rqou/openfpga,azonenberg/openfpga,rqou/openfpga,rqou/openfpga,rqou/openfpga,azonenberg/openfpga,azonenberg/openfpga,rqou/openfpga,azonenberg/openfpga