fix doxygen brief in subzero header files

src/IceCfgNode.cpp

Index: src/IceCfgNode.cpp
diff --git a/src/IceCfgNode.cpp b/src/IceCfgNode.cpp
index a105e918cceb83b877af584aef0cd7a9a147af7d..e4f4b7507895245f4ed94c024cb1120a29fce624 100644
--- a/src/IceCfgNode.cpp
+++ b/src/IceCfgNode.cpp
@@ -8,8 +8,8 @@
 //===----------------------------------------------------------------------===//
 ///
 /// \file
-/// This file implements the CfgNode class, including the complexities of
-/// instruction insertion and in-edge calculation.
+/// \brief Implements the CfgNode class, including the complexities

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

Reflow to 80-col.

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

Done.

+/// of instruction insertion and in-edge calculation.
 ///
 //===----------------------------------------------------------------------===//