MSVC: Fix compiler warnings

* avoid redefines in Assembly
* explicit cast from size_t to int
* remove unused variables
* avoid implicit cast from double to float
* in test cases replace EXPECT_FLOAT_EQ with EXPECT_DOUBLE_EQ or EXPECT_NEAR when doubles are used

src/Mod/CAM/PathSimulator/AppGL/EndMill.cpp

@@ -38,7 +38,7 @@ EndMill::EndMill(const std::vector<float>& toolProfile, int toolid, float diamet
     profilePoints = nullptr;
     mHandleAllocation = false;
 
-    int srcBuffSize = toolProfile.size();
+    int srcBuffSize = static_cast<int>(toolProfile.size());
     nPoints = srcBuffSize / 2;
     if (nPoints < 2) {
         return;