Move admin/check-hardlinks to misc/check-hardlinks
Add bash/functions/tilde
Update bash/functions

Use $FUNCNAME instead of hardcoding the function name
Update misc/check-hardlinks

* Ignore whole-line or end-of-line # comments in the hardlink file
* Perform tilde expansion on file paths
Update misc/check-hardlinks

* Add option --quiet
* Enforce return code policy
Update misc/check-hardlinks

Use `stat' instead of `ls | cut'
Update misc/check-hardlinks

Mention comments in hardlinks file in help text