hw: Branch target buffer implementation.
hw: Merge master with first branch target buffer implementation.
hw: Get branch target buffer working.
hw: Separate registers for high 32 bits of each 64-bit value.
hw: Omit flag zero from some connections.
hw: Slight simplification in register file.
hw: Slight clean-up and more stats in decode unit.
hw: Make branch target buffer and fast lines easily configurable.
hw: Enable branch target buffer by default.
hw: Update Quartus settings.