Test subtypep on array types of various ranks, exhibiting a subtypep bug on rank-0 array types in ACL 6.2
Added my-with-standard-io-syntax, to get around the lack of w-s-io-s in gcl. Also, improved random-partition.
This file had been sitting around for a while. Add it to the repository now, but don't load it until there are some actual tests.
Tweak the random state printing test so that rs1 is a copy of the random state. This protects against the possibility that *random-sate* is being modified elsewhere in the background during the test.