idautils.py: Added notes about Functions()'s behaviour when a function has chunks in multiple segments
idautils.py: Added notes about Functions()'s behaviour when a function has chunks in multiple segments

kamilkk/idapython,rigmar/idapython,Alwnikrotikz/idapython,roymuste/idapython,rigmar/idapython,kamilkk/idapython,trietptm/idapython,trietptm/idapython,Alwnikrotikz/idapython,Alwnikrotikz/idapython,rigmar/idapython,roymuste/idapython,kamilkk/idapython,roymuste/idapython,trietptm/idapython