fix docs for redex-generator
Gave collects/meta/check-dists more time when run by DrDr.
Set drdr:random property for files with nondeterministic output.

- src/build/make-install: nondeterministic job order
- src/build/make: nondeterministic job order
- src/build/configure: "checking for x86 cpuid 1 output... " line varies
- collects/tests/zo-size.rkt: file sizes
- collects/tests/unstable/temp-c/ttt-players.rkt: random
- collects/tests/unstable/temp-c/ttt-bench.rkt: timing
- collects/tests/unstable/temp-c/id-bench.rkt: timing
- collects/tests/unstable/temp-c/bench.rkt: timing
- collects/tests/unstable/temp-c/bench-affine.rkt: timing
- collects/tests/typed-racket/tr-random-testing.rkt: random
- collects/tests/racket/will.rktl: current-memory-use
- collects/tests/racket/threadlib.rktl: nondeterministic threads
- collects/tests/racket/syntax-tests.rktl: file-or-directory-modify-seconds
- collects/tests/racket/subprocess.rktl: process ids
- collects/tests/racket/submodule.rktl: temporary file names
- collects/tests/racket/stx.rktl: temporary file names
- collects/tests/racket/structlib.rktl: current-seconds
- collects/tests/racket/stress/vector.rkt: timing
- collects/tests/racket/stress/sequence.rkt: timing
- collects/tests/racket/stress/mpfr-ffi-call-vs-racket.rkt: timing
- collects/tests/racket/stress/module-stack.rkt: vector-set-performance-stats!
- collects/tests/racket/stress/hash.rkt: timing
- collects/tests/racket/stress/fuzz.rkt: random
- collects/tests/racket/stress/dict.rkt: timing
- collects/tests/racket/stress/apply.rkt: timing
- collects/tests/racket/sp.rktl: process ids
- collects/tests/racket/setup.rktl: temporary file names
- collects/tests/racket/serialize.rktl: current-seconds and temporary file names
- collects/tests/racket/sequence.rktl: random
- collects/tests/racket/runaway-place.rkt: nondeterministic output interleaving
- collects/tests/racket/resource.rktl: temporary file names
- collects/tests/racket/prompt-sfs.rkt: current-memory-use and dump-memory-stats
- collects/tests/racket/place-channel.rkt: nondeterministic places
- collects/tests/racket/place-channel-socket.rkt: unpredictable port number
- collects/tests/racket/place-channel-fd.rkt: unpredictable port number
- collects/tests/racket/parallel-build.rkt: temporary file names
- collects/tests/racket/package-gen.rktl: random
- collects/tests/racket/pack.rktl: temporary file names
- collects/tests/racket/module.rktl: temporary file names
- collects/tests/racket/iostream.rktl: timing
- collects/tests/racket/format.rkt: random
- collects/tests/racket/foreign-test.rktl: pointer addresses
- collects/tests/racket/fixnum.rktl: random
- collects/tests/racket/date.rktl: current-seconds
- collects/tests/racket/cm.rktl: file-or-directory-modify-seconds
- collects/tests/racket/benchmarks/shootout/chameneos.rkt: nondeterministic threads
- collects/tests/racket/benchmarks/shootout/auto.rkt: timing
- collects/tests/racket/benchmarks/rx/auto.rkt: timing
- collects/tests/racket/benchmarks/common/auto.rkt: timing
- collects/tests/racket/basic.rktl: random
- collects/tests/planet/run-all.rkt: nondeterministic job order
- collects/tests/openssl/basic.rkt: nondeterministic threads
- collects/tests/net/stress/websocket.rkt: timing
- collects/tests/gracket/draw-mem.rkt: current-memory-use
- collects/tests/future/timing-test.rkt: timing
- collects/tests/future/random-future.rkt: random
- collects/tests/frtime/time.rkt: seconds
- collects/tests/drracket/example-tool.rkt: temporary file names
- collects/redex/tests/ryr-test.rkt: temporary file names
- collects/redex/examples/delim-cont/randomized-tests.rkt: random
- collects/math/tests/bigfloat-custodian.rkt: random
- collects/2htdp/tests/struct-universe.rkt: nondeterministic parallel worlds