parents: change parents command to use filectx

Changes the parents command to use filectx to look up the change node
instead of doing it manually.  This allows extensions to modify the
file-to-commit relationship behind the filectx api.
i18n-pt_BR: synchronized with b500a663a2c7

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branch : stable
i18n-ru: fix translated config section

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branch : stable
i18n-ru: spell "ElementTree" correctly

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branch : stable
i18n-zh_CN: remove duplicate paragraphs

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branch : stable
i18n-zh_CN: add missing literal blocks

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branch : stable
i18n-zh_CN: remove duplicate paragraphs

They are added in the automatic conversion in e5b7841e0008.

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branch : stable
i18n-el: remove duplicate paragraphs

They were added in the conversion done in 8ef2cd109dc6.

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branch : stable
i18n-el: remove extra newline

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branch : stable
i18n-el: add missing indention for literal block

Thanks to Timeless for flagging this.

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branch : stable
i18n-da: add missing format character and fix translation

Thanks to Timeless for flagging the missing format character.

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branch : stable
i18n-da: remove bad fuzzy translation

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branch : stable
i18n-da: add missing heading underline

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branch : stable
templater: add strip function with chars as an extra argument

This allows specifying characters to strip, like the Python strip function.
bundle: move file chunk generation to it's own function

Moves the file chunk generation part of bundle creation to it's own function.
This allows extensions to customize the filelog part of bundle generation.
i18n-da: add missing format character and fix translation

Thanks to Timeless for flagging the missing format character.

--HG--
branch : stable
i18n-da: remove extra trailing newline and fix translation

Thanks to Timeless for flagging the extra newline.

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branch : stable
i18n-da: add missing newline

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branch : stable
i18n-da: remove extra trailing newline

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branch : stable
i18n-da: remove bad fuzzy translation

Reviewed by Martin Geisler.

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branch : stable