Update child module name when parent gets a temp name set

[eileencodes]

When calling set_temporary_name on a parent module the child modules should get their name updated too.

Before:

m = Module.new
m::N = Module.new
p m::N.name # => "#<Module:0x000000010d0a00b0>::N"

m.set_temporary_name("foo")
p m::N.name # => "#<Module:0x000000010d0a00b0>::N"

After:

m = Module.new
m::N = Module.new
p m::N.name # => "#<Module:0x000000010d0a00b0>::N"

m.set_temporary_name("foo")
p m::N.name # => "foo::N"

[Bug #21094]

[nobu]

Shouldn’t this change too?

m = Module.new
m::N = Module.new
m::N::O = Module.new

m.set_temporary_name("foo")
p m::N::O

[eileencodes]

Ah yea that should work too. I'll fix it tomorrow morning.

[nobu]

set_temporary_name.patch