test-hardlink: do not test .hg/cache/checklink...
test-hardlink: do not test .hg/cache/checklink
Linux and BSD have different behavior on "os.link(src, dst)" where "src" is
a symlink. That causes test difference.
According to POSIX [1]:
If path1 names a symbolic link, it is implementation-defined whether
link() follows the symbolic link, or creates a new link to the symbolic
link itself.
So both behaviors are correct. This patch removes the trouble maker
"checklink" to make the test pass on both platforms.
[1]:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/link.html
