convert/gnuarch: parse continuation-of revisions in gnuarch source In GNU Arch, continuation-of was often used for: - tagging revisions - continue working on a project in a new archive, because arch was scaling poorly in revision numbers (cat-logs were slow to be parsed and scanned through) - very similar to the previous point, fork his own branch of a project. Parsing this header information will allow to 'follow' new history because it often hints at older/forked/personal revision trees. This patch however just implements the parsing of the continuation-of header. A followup patch will implement the proper use of this new information.

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pulling from ../a

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searching for changes

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abort: repository is unrelated

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pulling from ../a

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searching for changes

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warning: repository is unrelated

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adding changesets

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adding manifests

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adding file changes

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added 1 changesets with 1 changes to 1 files (+1 heads)

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(run 'hg heads' to see heads, 'hg merge' to merge)

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changeset:   1:bdcee5d51fa6

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tag:         tip

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parent:      -1:000000000000

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user:        a

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date:        Mon Jan 12 13:46:40 1970 +0000

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summary:     a

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changeset:   0:f155ba1aa5ba

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user:        b

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date:        Mon Jan 12 13:46:40 1970 +0000

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summary:     b

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