[PATCH] [ASan/Win] Use clang rather than clang-cl by default for lit tests. Make Windows-only tests explicitly use clang-cl.

[Timur Iskhodzhanov]

PTAL

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Comment at: cmake/Modules/CompilerRTCompile.cmake:24
@@ +23,3 @@
+  if(MSVC)
+    string(REPLACE ";/" ";-" global_flags "${global_flags}")
+  endif()
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Alexey Samsonov wrote:
> what if the first element of global_flags starts with / ?
Good catch, fixed.

http://reviews.llvm.org/D3893