Give this file a proper header

llvm-svn: 9141
diff --git a/llvm/tools/gccas/gccas.cpp b/llvm/tools/gccas/gccas.cpp
index 8388c9b..8194fa1 100644
--- a/llvm/tools/gccas/gccas.cpp
+++ b/llvm/tools/gccas/gccas.cpp
@@ -1,5 +1,4 @@
-//===----------------------------------------------------------------------===//
-// LLVM 'GCCAS' UTILITY 
+//===-- gccas.cpp - The "optimizing assembler" used by the GCC frontend ---===//
 //
 // This utility is designed to be used by the GCC frontend for creating bytecode
 // files from its intermediate LLVM assembly.  The requirements for this utility