Default [Q] What is the meaning on the build number at moto g source files in sourceforge?

Hi,
I've been looking at http://sourceforge.net/projects/motog.motorola/files/ in order to do a checkout and begin to study the motorola code for our little g. However, currently there is the following list of folders:
14.10.0Q3.X-84-9
14.10.0Q3.X-84-16
14.10.0Q3.X-84-14
14.10.0Q3.X-76-LCG-8 OR 14.10.0Q3.X-76-LGG-8
14.10.0Q3.X-76-LCG-9
14.10.0Q3.X-84-7-LCG-2

I'm a noob at very early stages, and I got confused. Does anyone know what does each number stand for? What is the difference between LCG and LGG? What is KXB20.9-1.8-1.4? Is it another kernel source like earlier?

Which folder should I download?