[Bug preprocessor/60492] Using the L#param in a macro fails

[duncan_roe at acslink dot net.au]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60492

--- Comment #4 from duncan_roe at acslink dot net.au <duncan_roe at acslink dot 
net.au> ---
This works:
#define DEFINE_XML_TOKEN_STRING(n, s) const char n##a[] = #s; const wchar_t
n##w[] = L###s;