Fix passing a globals list to luacheck

[henriquegemignani]

luacheck receives a comma-delimited list of globals

[aparajita]

Are you absolutely sure about this? The docs clearly show space-delimited args. But I haven't actually tested on the command line. Can you show the command line output for both?

[henriquegemignani]

Checking things, what the patch does it not actually create a comma-delimited list of globals, but instead tell SublimeLinters to not merge the list into a single argument and instead pass each item as a different positional argument.

Also, the --globals argument is similar to the --ignore argument, so both should be treated the same way.

[aparajita]

Okay.