Move test/fixtures to test/regular-fixtures so we can add more fixtures later

The main change in `test/ncp.js` is moving the `var fixtures`
declaration down into a test function scope, so that we can use
a different fixture directory for the upcoming symlink tests. The rest
is re-indentation.
Add dereference option to follow symbolic links in the source tree
Merge pull request #48 from joliss/dereference

Add dereference option