color: add support for Windows consoles Introduces color.mode configurable with values 'auto', 'ansi', or 'win32'. Any other value disables coloring. When 'auto' is selected, the win32 console method will be used if the win32console Python module is detected (requires pywin32 to be installed).

color: remove unused import

merge with stable

merge default with default

merge stable with stable

dirstate: no need to iterate twice, a dict can be updated in place

merge with stable

clone: no race possible, we can use changegroup() and have smaller urls Related to issue2126