Updated to latest and greatest demangler sources.

<rdar://problem/15736085>

llvm-svn: 199946
diff --git a/lldb/source/Core/Mangled.cpp b/lldb/source/Core/Mangled.cpp
index 089f5e5..55bd3cb 100644
--- a/lldb/source/Core/Mangled.cpp
+++ b/lldb/source/Core/Mangled.cpp
@@ -23,7 +23,7 @@
 //----------------------------------------------------------------------
 // Inlined copy of:
 // http://llvm.org/svn/llvm-project/libcxxabi/trunk/src/cxa_demangle.cpp
-// revision 197169.
+// revision 199944.
 //
 // Changes include:
 // - remove the "__cxxabiv1" namespace
@@ -2313,6 +2313,7 @@
 //                   ::= gt    # >             
 //                   ::= ix    # []            
 //                   ::= le    # <=            
+//                   ::= li <source-name>  # operator ""
 //                   ::= ls    # <<            
 //                   ::= lS    # <<=           
 //                   ::= lt    # <             
@@ -2474,6 +2475,18 @@
                 db.names.push_back("operator<=");
                 first += 2;
                 break;
+            case 'i':
+                {
+                    const char* t = parse_source_name(first+2, last, db);
+                    if (t != first+2)
+                    {
+                        if (db.names.empty())
+                            return first;
+                        db.names.back().first.insert(0, "operator\"\" ");
+                        first = t;
+                    }
+                }
+                break;
             case 's':
                 db.names.push_back("operator<<");
                 first += 2;