[cfe-commits] [patch] Reorder header search a bit

[Rafael Espindola]

The attached patch reorder the header search a bit so that it matches
gcc exactly. The changes are

*) the ../backward is the last in libstdc++ to be searched
*) If compiling c++ the c++ headers are searched first

I don't know if some code actually depends on this. I just found it by
looking at gcc -v and clang -v.

Cheers,
-- 
Rafael Ávila de Espíndola
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