Add a stub frontend action for BoostCon, for next week's workshop.

llvm-svn: 103258
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 92f33d0..dca607e 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -308,6 +308,7 @@
   case frontend::ASTPrint:               return "-ast-print";
   case frontend::ASTPrintXML:            return "-ast-print-xml";
   case frontend::ASTView:                return "-ast-view";
+  case frontend::BoostCon:               return "-boostcon";
   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
   case frontend::DumpTokens:             return "-dump-tokens";
   case frontend::EmitAssembly:           return "-S";
@@ -937,6 +938,8 @@
       Opts.ProgramAction = frontend::ASTPrintXML; break;
     case OPT_ast_view:
       Opts.ProgramAction = frontend::ASTView; break;
+    case OPT_boostcon:
+      Opts.ProgramAction = frontend::BoostCon; break;
     case OPT_dump_raw_tokens:
       Opts.ProgramAction = frontend::DumpRawTokens; break;
     case OPT_dump_tokens: