Kernel.select results are always arrays
fix for IO#read_nonblock
Test #select returns arrays
Merge pull request #339 from hqmq/michael/github338

fix for IO#read_nonblock
Keep tests 338 and 339
Merge pull request #341 from MagLev/johnnyt/select-arrays

select should return arrays
Merge branch 'master' into tim/github313

Conflicts:
	src/test/vmunit.conf