fix doxygen brief in subzero header files

src/IceTargetLoweringX86Base.h

 //===- subzero/src/IceTargetLoweringX86Base.h - x86 lowering ----*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
-/// This file declares the TargetLoweringX86 template class, which implements
+/// \brief Declares the TargetLoweringX86 template class, which implements

[Jim Stichnoth, 2015/12/01 18:41:16]

Reflow to 80-col.

[rkotlerimgtec, 2015/12/02 01:32:48]

Done.

 /// the TargetLowering base interface for the x86 architecture.
 ///
 //===----------------------------------------------------------------------===//
 
 #ifndef SUBZERO_SRC_ICETARGETLOWERINGX86BASE_H
 #define SUBZERO_SRC_ICETARGETLOWERINGX86BASE_H
 
 #include "IceDefs.h"
 #include "IceInst.h"
 #include "IceSwitchLowering.h"
@@ skipping 756 matching lines @@
   lowerIcmp64(const InstIcmp *Icmp, const InstBr *Br);
 
   BoolFolding FoldingInfo;
 };
 } // end of namespace X86Internal
 } // end of namespace Ice
 
 #include "IceTargetLoweringX86BaseImpl.h"
 
 #endif // SUBZERO_SRC_ICETARGETLOWERINGX86BASE_H