Add spaces to macros in memory.h to make C++11 compilers happy

[Geequlim]

No description provided.

[bojidar-bg]

@Geequlim Does the new version work in old compilers, and if so, wouldn't it be better to drop the #if?

[Geequlim]

@bojidar-bg I just tested with this code

#define __STR "ABC"
#include <iostream>
int main() {
  std::cout << "C++ version:" << __cplusplus << std::endl;
  std::cout << __STR "DEF" << std::endl;
  return 0;
}

The code can be compiled with both GCC 6.1.1 and Clang 3.8.0 with --std=c++98 option

I'm not sure it could work with old version compilers so I didn't drop the old version.

[bojidar-bg]

@Geequlim ~ Well, C++ shouldn't require no spaces for operations I think...

[Geequlim]

@bojidar-bg I think so.
Should I remove the #if then?

[akien-mga]

I think you can remove the #if yeah, we'll have Travis testing the PR on a likely older GCC version anyway. But as @bojidar-bg mentioned, I don't expect compilers to break on it.

[Geequlim]

@akien-mga I have removed #if and pushed :)

[akien-mga]

Could you squash the two commits together? :)

[Geequlim]

@akien-mga Squashed.

[akien-mga]

Thanks :)