Add symlink method to util.opener.
Differences from os.symlink:
- the symlink name is relative to the opener base directory
- if a file with that name already exists, it's removed
- if necessary, parent directories are created
- if the system (OS or filesystem) doesn't support symlinks, a
regular file is created. Its contents are the symlink target.
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Should display 'First commit message'
description:
First commit message
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Should display 'Second commit message'
description:
Second commit message
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Should display 'Third commit message\n This is the 3rd log message'
description:
Third commit message
This is the 3rd log message
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Should display 'Fifth commit message\n This is the 5th log message'
description:
Fifth commit message