• Fix pack issue: if pyi-makespec could not be found, it will complain of OSError: [WinError 2] The system cannot find the file specified.
• Fix PYTHONOPTIMIZE=2 doesn't work issue
• Fix super mode issue: auto patch failed if there are multiple lines in function header
• Fix command register issue: it could not show registration information even if register successfully. It's introduced in v6.3.5.