fix doxygen brief in subzero header files

src/PNaClTranslator.cpp

 //===- subzero/src/PNaClTranslator.cpp - ICE from bitcode -----------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
-/// This file implements the PNaCl bitcode file to Ice, to machine code
+/// \brief Implements the PNaCl bitcode file to Ice, to machine code

[Jim Stichnoth, 2015/12/01 18:41:17]

How about:

Implements the interface for translation from PNaCl bitcode files to ICE to
machine code.

[rkotlerimgtec, 2015/12/02 01:32:49]

Done.

 /// translator.
 ///
 //===----------------------------------------------------------------------===//
 
 #include "PNaClTranslator.h"
 
 #include "IceAPInt.h"
 #include "IceAPFloat.h"
 #include "IceCfg.h"
 #include "IceCfgNode.h"
@@ skipping 3275 matching lines @@
     raw_string_ostream StrBuf(Buffer);
     StrBuf << IRFilename << ": Does not contain a module!";
     llvm::report_fatal_error(StrBuf.str());
   }
   if (InputStreamFile.getBitcodeBytes().getExtent() % 4 != 0) {
     llvm::report_fatal_error("Bitcode stream should be a multiple of 4 bytes");
   }
 }
 
 } // end of namespace Ice