Add (unsupported experimental) feature allowing byte aligned bitcode.

lib/Bitcode/NaCl/Analysis/NaClBitcodeAnalyzer.cpp

Index: lib/Bitcode/NaCl/Analysis/NaClBitcodeAnalyzer.cpp
diff --git a/lib/Bitcode/NaCl/Analysis/NaClBitcodeAnalyzer.cpp b/lib/Bitcode/NaCl/Analysis/NaClBitcodeAnalyzer.cpp
index 3caab42e06d3067c258825071119ab50a6c9da48..f145a363f0754cbb6b26cba89854e655721fccfc 100644
--- a/lib/Bitcode/NaCl/Analysis/NaClBitcodeAnalyzer.cpp
+++ b/lib/Bitcode/NaCl/Analysis/NaClBitcodeAnalyzer.cpp
@@ -419,7 +419,7 @@ int AnalyzeBitcodeInBuffer(const std::unique_ptr<MemoryBuffer> &Buf,
   if (!Header.IsReadable())
     Error("Bitcode file is not readable");
 
-  NaClBitstreamReader StreamFile(BufPtr, EndBufPtr);
+  NaClBitstreamReader StreamFile(BufPtr, EndBufPtr, Header);
   NaClBitstreamCursor Stream(StreamFile);
 
   unsigned NumTopBlocks = 0;