500MHz RevF support and Mixed Crates

[tking53]

With the upcoming Xe experiment we need the ability to scan a mixed module type (Read as frequency) system.
List of things to do:

• Add and test the firmware for the Pixie 16 500MHz (currently working with R35207 general)
• Modify the Get/Set CFDTriggerSourceBit() and Get/Set CFDForcedTriggerBit() functions to work with the 500MHz data.
• Add the module frequency to the Channel Configuration (GetChanID().GetModFreq())
• Update the various GetClockInSeconds() functions to return a variable conversion factor. These were overloaded to take the module frequency parsed from the XML
• Update the main detector processors to use the new conversion functions.
  (Mostly Done)
• Update the raw event builder and the unpackers to use GetTimeSansCfd() and TIME units to build the events rather than ticks

[tking53]

• Update GetClockInSeconds to work with Module Numbers because we dont always have access to GetChanID() when we need to convert. (UtkUnpacker::RawStats etc)