Redefine getPacketTypeID() functions as macros

[jefffisher]

Not sure if it makes any sense to actually implement it, but it'd be nice to be able to do, e.g.:

switch (getNovatelPacketID())
{
case getBinaryResponsePacketID():
    // Do something...
    break;
};

So in that particular case, it'd be a change in NovatelPackets.h that'd look something like this:

- uint32_t getBinaryResponsePacketID(void);
+ #define getBinaryResponsePacketID() (1)

[billvaglienti]

Done, version 1.4.8.a