instead of select it when read value from reg file
so that we needn't save imm in data

add parameter srcNum in RsCtrlDataIO

dispatch: optimize timing

LoadQueue: use getFirstOne to select wb candidate

RS: optimize reservation station's timing

Dualcore plic

DataModuleTemplate: add syncread support

LSQ: update store queue dataModule

LoadUnit: fixed FPload

Alu: opt timing

ReservationStation: change width of srcRegValue into (XLEN+1)

reg -> reg / imm

from 8/12 to 4

Now storequeue dataModule is divided into 3 modules:
* vaddrModule (2w1r)
* exceptionModule (2w1r)
* dataModule (core data module, 2w2r+fwd)

FPDecoder: fix 'X' bug

* urge tests for external interrupt

Lock remote emu to avoid hw harzard

Opt sbuffer timing