Use C++11-compliant string concatenation #659
Merged
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C++11 reserves syntax like X"foo" and "foo"X for future syntax like
L"a wide-char string", so concatenating macros with literals now
requires an intervening space. Fixes most, if not all, of #651.
Tested on Linux, so I could potentially have missed some instances of non-C++11-compliant concatenation in code specific to other platforms - compiling with MSVC in C++11 or C++14 mode would probably detect anything that's left.