convert: refactor sink initialisation, to remove hardcoding of hg
We also introduce options to explicitly set the source and destination
repository types.
Improve testing of corner cases a little.
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reverting file1
? file1.orig
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
? file1.orig
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1 files updated, 0 files merged, 0 files removed, 0 files unresolved
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
? file1.orig
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? file1.orig
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? file1.orig
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0 files updated, 0 files merged, 0 files removed, 0 files unresolved
? file1.orig
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