lids plugin

[Auke Kok]

Hi,

I've just merged a lids plugin into moonbase and finished support for
this in lunar/theedge. This plugin allows you to seamlessly check file
and directory permissions when you install and remove modules.

To turn this feature on, use `lunar set USE_LIDS on`. The plugin will
then create a list of permissions for every item installed and know the
owner and exact permissions. You can manually run a check by issueing
`lids check`. Lids also can read the md5sums kept by lunar and check
those: `lids md5check`. Specific modules can be checked too by adding
the name of the module to the cmdline.

Without USE_LIDS turned on, nothing is done when installing or removing
a module. When you want to create permission files for all modules you
can use `lids create`. This will also overwrite any previously generated
permissions files. Use this feature once on machines where you just
turned on USE_LIDS.

You'll need a brand-new lunar+moonbase and lunar-tools to use this feature.

sofar