grammar: consider [;(){}] non acceptble for operator name
grammar: consider [;(){}] non acceptble for operator name

This allows to not provide a body like for functions:

    class A
    {
        // using default implementation, strictly identical to:
		// operator new {}
        operator new;
    }

milipili/nany,milipili/nany,nany-lang/nany,nany-lang/nany,nany-lang/nany,nany-lang/nanyc,milipili/nany,nany-lang/nanyc,nany-lang/nanyc