-Core: added overloaded assignment operator to parameter_t for boolean type
-Core: added overloaded assignment operator to parameter_t for boolean type

rubdos/TheBounty-Core,Wyk3d/YafaRay,Wyk3d/YafaRay,DarkTide/Core,Wyk3d/YafaRay,rubdos/TheBounty-Core,DarkTide/Core