Committing patch from <Michael Woerister <michaelwoerister@posteo.net>

to use the default clang C/C++ expression parser when debugging
Rust programs.  Ideally there would be a rust language plugin to
support their language natively, but until then this will get simple
variable display to work.

http://reviews.llvm.org/D19545

llvm-svn: 267667

lldb/source/Symbol/ClangASTContext.cpp

@@ -110,6 +110,8 @@ namespace
                Language::LanguageIsC (language) ||
                Language::LanguageIsCPlusPlus (language) ||
                Language::LanguageIsObjC (language) ||
+               // Use Clang for Rust until there is a proper language plugin for it
+               language == eLanguageTypeRust ||
                language == eLanguageTypeExtRenderScript;
     }
 }