fix doxygen brief in subzero header files

src/IceAPInt.h

 //===-- subzero/src/IceAPInt.h - Constant integer conversions --*- C++ -*--===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
-/// \brief This file implements a class to represent 64 bit integer constant
+/// \brief Implements a class to represent 64 bit integer constant

[Jim Stichnoth, 2015/12/01 18:41:15]

Reflow to 80-col

[rkotlerimgtec, 2015/12/02 01:32:47]

this file has been deleted

 /// values, and their conversion to variable bit sized integers.
 ///
 /// Note: This is a simplified version of llvm/include/llvm/ADT/APInt.h for use
 /// with Subzero.
 //===----------------------------------------------------------------------===//
 
 #ifndef SUBZERO_SRC_ICEAPINT_H
 #define SUBZERO_SRC_ICEAPINT_H
 
 #include "IceDefs.h"
@@ skipping 35 matching lines @@
       return;
 
     // Mask out the high bits.
     Val &= ~static_cast<uint64_t>(0) >> (APINT_BITS_PER_WORD - BitWidth);
   }
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEAPINT_H