amend: support "history-editing-backup" config option
Now, amend is in the list of those history editing commands
which support `history-editing-backup` config option.
If you don't want to store any backup then just use this config.
[ui]
hisotry-editing-backup = False
Current status of list of history editing commands which support
this config:
1. histedit
2. rebase
3. amend
Differential Revision: https://phab.mercurial-scm.org/D3968
# See http://EditorConfig.org for the specification
root = true
[*.py]
indent_size = 4
indent_style = space
trim_trailing_whitespace = true
[*.{c,h}]
indent_size = 8
indent_style = tab
trim_trailing_whitespace = true
[*.t]
indent_size = 2
indent_style = space
trim_trailing_whitespace = false