[lldb] Force override when adding crashlog command

[mib]

Summary

When using interactive crashlog from an IDE, it can happen that the user
already have the command script import lldb.macosx.crashlog command on
their lldbinit file.

That leads to showing some message:

error: cannot add command: user command exists and force replace not set
error: cannot add command: user command exists and force replace not set

This leads to confusion because the crashlog symbolication continues and
succeeds even after these errors.

To address that, the crashlog commands get overridden everytime the
script get re-imported.

rdar://103403943

Signed-off-by: Med Ismail Bennani <[e-mail]>

[bulbazord]

Do we want to do this for all the modules in examples/python that do something to this effect? e.g. memory.py as well.

It also might be worth changing some of those messages from errors to warnings, since that's what they actually are.

lldb/examples/python/crashlog.py

if __name__ == '__main__':
     # Create a new debugger instance
     debugger = lldb.SBDebugger.Create()
     result = lldb.SBCommandReturnObject()
     SymbolicateCrashLogs(debugger, sys.argv[1:], result)
     lldb.SBDebugger.Destroy(debugger)
 
 def __lldb_init_module(debugger, internal_dict):
     debugger.HandleCommand(
-        'command script add -c lldb.macosx.crashlog.Symbolicate crashlog')
+        'command script add -o -c lldb.macosx.crashlog.Symbolicate crashlog')
     debugger.HandleCommand(
-        'command script add -f lldb.macosx.crashlog.save_crashlog save_crashlog')
+        'command script add -o -f lldb.macosx.crashlog.save_crashlog save_crashlog')
     print('"crashlog" and "save_crashlog" commands have been installed, use '
           'the "--help" options on these commands for detailed help.')