Option to preserve symlinks

[dhimmel]

Git supports symbolic links and symbolic links work with GitHub Pages (see example).

Currently, the default behavior of ghp-import is to follow symlinks for files but not directories. Specifying --follow-links causes ghp-import to follow links for both files and directories: see #37 (comment). However, neither case preserves the symlinks, which is a feature that would help me with manubot/rootstock#101.

Perhaps the ideal behavior (disregarding backwards compatibility) would be to:

• preserve symlinks that link to a file or directory within the "documentation directory"
• follow symlinks that link to a file or directory outside of the "documentation directory"

However, given backwards compatibility, it would make sense perhaps to have a --preserve-links argument that would preserve all symbolic links. It would be mutually exclusive with --follow-links.

@davisp what do you think? I could try to take a crack at an implementation. I haven't looked much into how difficult this would be to implement.

[c-w]

@dhimmel Please submit a pull request for this. In the meantime, resolving this issue as it's over 2 years old. Feel free to reopen if it's still a blocker for you.