program_t::add_registered_globals should be able to take a container of any string-like type

[eyalroz]

In cuda::rtc::program_t, we currently have a:

add_registered_globals(Container&& globals_to_register);

member. The signature is file, but - it currently only works if the elements are const char*, not std::string nor any kind of string view.

[eyalroz]

... but we can't accept an rvalue reference to a container with non-const-char* . Also, we don't know about string_view's since we're in C++11.