fixes build system to handle TCC properly

gen_input/templates/tcc/CORENAME.cpp.gtl

@@ -301,7 +301,7 @@ template <typename ARCH> void vm_impl<ARCH>::gen_trap_behavior(tu_builder& tu) {
     tu("return *next_pc;");
 }
 
-} // namespace mnrv32
+} // namespace ${coreDef.name.toLowerCase()}
 
 template <>
 std::unique_ptr<vm_if> create<arch::${coreDef.name.toLowerCase()}>(arch::${coreDef.name.toLowerCase()} *core, unsigned short port, bool dump) {