Add abilities to generate bitcode buffers from munged bitcode.

include/llvm/Bitcode/NaCl/NaClBitstreamWriter.h

Index: include/llvm/Bitcode/NaCl/NaClBitstreamWriter.h
diff --git a/include/llvm/Bitcode/NaCl/NaClBitstreamWriter.h b/include/llvm/Bitcode/NaCl/NaClBitstreamWriter.h
index 37af80a7c179e3fc5b08e79df06d89bb8eed491f..6b2a54351ce1b498375b5f478fcbe9eccbd2a05d 100644
--- a/include/llvm/Bitcode/NaCl/NaClBitstreamWriter.h
+++ b/include/llvm/Bitcode/NaCl/NaClBitstreamWriter.h
@@ -123,7 +123,7 @@ public:
       : Out(O), CurBit(0), CurValue(0), CurCodeSize() {}
 
   ~NaClBitstreamWriter() {
-    assert(CurBit == 0 && "Unflused data remaining");
+    assert(CurBit == 0 && "Unflushed data remaining");
     assert(BlockScope.empty() && CurAbbrevs.empty() && "Block imbalance");
 
     // Free the BlockInfoRecords.