It scans EmEditor Macros folder (Macros -> Customize -> Options -> folder)
for .jsee, .vbee, .py files and appends new macros to the list of macros in the menu.
It also removes from the menu macros that no longer exist.
Handy after you add new macro files or rename existing ones.
Note: This macro does not work if the MacroFolder value does not exist in the registry key HKCU\Software\EmSoft\EmEditor v3\Common. In this case, you can make it work by selecting Customize on the Macros menu, and click OK.