Make :loadsubs reload instanced personals too
Right now if your subs get lost because something falls over, you have
to manually sub to instanced personals to get them back. :loadsubs
doesn't work.
(Supposedly that code is for "backwards compatibility", but... it dates
back to kretch. Probably because it's odd that :loadsubs [file] will
also automatically load the default subs. But given that everyone runs
:loadsubs with no argument to mean "oops zephyr fell over reload my subs
please", I'm okay with adding more code to the "backwards compatibility"
path. I doubt anyone actually runs :loadsubs with an argument anyway.)
Also, while I'm here, get rid of that 'foo' variable. (Really? Really?!
foo?!?)
(cherry picked from commit 05adccf169f26130f56cd69a12829a9d80043a75)
