Makefile:   added targeted file command: make Matematica.java compiles and runs the test/Matematica.java.txt e.g.
src/llvm/Codegen.java:  started to correcting the ast's problems
src/llvmutility/*.java: new classes to Symbols Table
Merge branch 'master' of https://github.com/gagallo7/MC911

Conflicts:
	Project2/pacote/src/llvm/Codegen.java