rename -parse-ast-view to -ast-view


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@42853 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Driver/clang.cpp b/Driver/clang.cpp
index e5185d0..9d8f712 100644
--- a/Driver/clang.cpp
+++ b/Driver/clang.cpp
@@ -87,7 +87,7 @@
                         "Build ASTs and then pretty-print them"),
              clEnumValN(ASTDump, "ast-dump",
                         "Build ASTs and then debug dump them"),
-             clEnumValN(ASTView, "parse-ast-view",
+             clEnumValN(ASTView, "ast-view",
                         "Build ASTs and view them with GraphViz."),
              clEnumValN(ParseCFGDump, "dump-cfg",
                         "Run parser, then build and print CFGs."),