luarocks_org 1.0 portgroup typos and unclear description

[ryandesign (Ryan Carsten Schmidt)]

Line 3 of the luarocks_org 1.0 portgroup is:

# This PortGroup extends lurocks PG for lurocks rocks

There's an obvious typo where "lurocks" should be "luarocks" but even so, I don't understand the description. Line 3 of the luarocks 1.1 portgroup is:

# This PortGroup supports the luarocks build system

So why was a separate luarocks_org portgroup needed to extend it? Why couldn't what it does be part of the luarocks portgroup? If they do need to remain separate, it would be good to get a clearer explanation into the comments of the luarocks_org portgroup.