Added a new "module" log channel which covers module creation, deletion, and common module list actions.

Also added a new option for "log enable" which is "--stack" which will print out a stack backtrace for each log line.

This was used to track down the leaking module issue I fixed last week.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@165438 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/API/SBCommandInterpreter.cpp b/source/API/SBCommandInterpreter.cpp
index f125f55..3f22a17 100644
--- a/source/API/SBCommandInterpreter.cpp
+++ b/source/API/SBCommandInterpreter.cpp
@@ -40,7 +40,7 @@
     m_backend(backend) {}
     
     virtual bool
-    IsRemovable() { return true; }
+    IsRemovable() const { return true; }
     
 protected:
     virtual bool