coco3fpga: Add RAM disk and clock setup to startup files Edited Coco3FPGA startup files to faciliate initializing the new ramdisk driver. Only the _bootrom.dsk, which doesn't use DriveWire nor RTC, will need the clock set manually and will therefore use the startup.fpga script with the setime command. The others will use startup.fpgadw which has no setime command. Also skip printing empty lines and instead be more verbose about what the startup script is doing.