Added global scope gestion for MIPS and better generation of MIPS instructions, a tex file to test, moved enum from constants.h to quad.h and added numbers to identify, and there are also some changes from Celelibi still here...

(Done quickly for the presentation. Could contains some crappy stuff. Sorry !)
Merge branch 'master' of https://github.com/Cigale/Compilation

Conflicts:
	latex.y
	math.tex
	quad.c
	quad.h
	tds.c
	tds.h