Added the infrastructure necessary for plug-ins to be able to add their own settings instead of having settings added to existing ones. In particular "target.disable-kext-loading" was added to "target" where it should actually be specific to the the dynamic loader plugin. Now the plug-in manager has the ability to create settings at the root level starting with "plugin". Each plug-in type can add new sub dictionaries, and then each plug-in can register a setting dictionary under its own short name. For example the DynamicLoaderDarwinKernel plug-in now registers a setting dictionary at:

plugin
    dynamic-loader
        macosx-kernel
            (bool) disable-kext-loading
            
To settings can be set using:

(lldb) settings set plugin.dynamic-loader.macosx-kernel.disable-kext-loading true

I currently only hooked up the DynamicLoader plug-ins, but the code is very easy to duplicate when and if we need settings for other plug-ins.

llvm-svn: 166294

lldb/source/Core/UserSettingsController.cpp

@@ -95,3 +95,15 @@ Properties::Apropos (const char *keyword, std::vector<const Property *> &matchin
     }
     return matching_properties.size();
 }
+
+
+lldb::OptionValuePropertiesSP
+Properties::GetSubProperty (const ExecutionContext *exe_ctx,
+                            const ConstString &name)
+{
+    OptionValuePropertiesSP properties_sp (GetValueProperties ());
+    if (properties_sp)
+        return properties_sp->GetSubProperty (exe_ctx, name);
+    return lldb::OptionValuePropertiesSP();
+}
+