Disable exception handling.

Use -fno-exceptions in cmake.
On MSVC, enable _HAS_EXCEPTION=0.
Cleanup throw/catch from the source.
Create yaml.cpp enclave because it needs exception to work.
Disable thread_local optimizations in logs.cpp (TODO).
Implement cpu_counter for cpu_threads (moved globals).

rpcs3/util/yaml.cpp

@@ -0,0 +1,17 @@
+#include "util/yaml.hpp"
+
+std::pair<YAML::Node, std::string> yaml_load(const std::string& from)
+{
+	YAML::Node result;
+
+	try
+	{
+		result = YAML::Load(from);
+	}
+	catch(const std::exception& e)
+	{
+		return{YAML::Node(), std::string("YAML exception:\n") + e.what()};
+	}
+
+	return{result, ""};
+}