Fix handling of symlinks causing directory tree recursion to break

[winstona]

This should fix issue: #8

symlinks are stored in the data file as:

l 2017-09-24 18:41:05 30 <srcdir>/extlinux.conf -> ../boot/extlinux/extlinux.conf

the destination -> ../boot/extlinux/extlinux.conf breaks traversal of the directory tree, causing subdirectory placement to put directories in the wrong location.

This fix strips out the destination leaving just the symlink filename