[PATCH] [Support][MemoryBuffer] Use sys::fs::mapped_file_region instead of sys::Path::MapInFilePages.

[Michael Spencer]

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Comment at: lib/Support/MemoryBuffer.cpp:188-190
@@ -185,4 +187,5 @@
 namespace {
 /// MemoryBufferMMapFile - This represents a file that was mapped in with the
 /// sys::Path::MapInFilePages method.  When destroyed, it calls the
 /// sys::Path::UnMapFilePages method.
+class MemoryBufferMMapFile : public MemoryBuffer {
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I'll fix this comment.


http://llvm-reviews.chandlerc.com/D528