Add the ability to limit "source regexp" breakpoints to a particular function

within a source file.

This isn't done, I need to make the name match smarter (right now it requires an
exact match which is annoying for methods of a class in a namespace.

Also, though we use it in tests all over the place, it doesn't look like we have
a test for Source Regexp breakpoints by themselves, I'll add that in a follow-on patch.

llvm-svn: 267834

lldb/source/API/SBStringList.cpp

@@ -126,6 +126,16 @@ SBStringList::GetStringAtIndex (size_t idx)
     return NULL;
 }
 
+const char *
+SBStringList::GetStringAtIndex (size_t idx) const
+{
+    if (IsValid())
+    {
+        return m_opaque_ap->GetStringAtIndex (idx);
+    }
+    return NULL;
+}
+
 void
 SBStringList::Clear ()
 {