[PATCH] [lsan] [mips] adding support of lsan for mips64/mips64el arch

[Sergey Matveev]

I'm actually doing a bootstrap build so it's a bit complicated. But it shouldn't matter, something like this should work just as well (assuming you have g++ 4.8 installed):

```
cmake ../llvm/ -G Ninja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=True
ninja check-sanitizer
```

Which commands are you using?

http://reviews.llvm.org/D5616