[Decompiler - New IR] Add AtomicOp (#181)

* wip decompiler ir

* add AtomicOp stuff

* fix windows build and warnings

* add instruction parser

* include

* make minilzo shared

* odr fix

* a

* fix merge conflicts

* move decompiler into namespace

* update the code coverage to include the decompiler

* add demo test

* add register use test to example test

decompiler/IR/IR_ExpressionStack.cpp

@@ -2,6 +2,7 @@
 #include "IR.h"
 #include "decompiler/Function/ExpressionStack.h"
 
+namespace decompiler {
 bool IR_Set_Atomic::expression_stack(ExpressionStack& stack, LinkedObjectFile& file) {
   // first determine the type of the set.
   switch (kind) {
@@ -448,4 +449,5 @@ bool IR_FloatMath1::update_from_stack(const std::unordered_set<Register, Registe
                                       LinkedObjectFile& file) {
   update_from_stack_helper(&arg, consume, stack, file);
   return true;
-}
+}
+}  // namespace decompiler