move nprocs and myid to Distributed

[vchuravy]

I was trying to fix the logic in #25119 while also optimising myid and nprocs
and I think it is better to fully deprecate them.

@vtjnash mentioned to me that the usage of object_number is most likely incorrect,
but I do not understand the code well enough to attempt a fix, so I went with the minimal solution.

fixes #25077
fixes #25135

replaces #25119

[StefanKarpinski]

cc @amitmurthy

[amitmurthy]

LGTM.

[vchuravy]

@vtjnash The I am seeing ssertion !NameRef.empty() && "Normal symbols cannot be unnamed!"'` failed. on 32bit CircleCI: https://gist.github.com/vchuravy/ff6037267644e56fce9c78b1ec4df183

Has anybody seen the Error deserializing a remote exception before?

RemoteException(23, CapturedException(ErrorException("could not open file /tmpz9VYTm"), Any[(include at boot.jl:286 [inlined], 1), (include_relative at loading.jl:493, 1), (include at sysimg.jl:26, 1), (include at sysimg.jl:65, 1), (#122 at process_messages.jl:269, 1), (run_work_thunk at process_messages.jl:56, 1), (macro expansion at process_messages.jl:269 [inlined], 1), (#121 at event.jl:92, 1)]))


Distributed (1)           |  214.58  |  0.01  |  0.0 |  6.82      | 304.08  
libgit2: Error During Test at nothing:1
  Test threw an exception of type RemoteException
  Expression: libgit2
  Error deserializing a remote exception from worker 10
  Remote(original) exception of type Test.TestSetException
  Remote stacktrace : 
  finish at /home/circleci/project/usr/share/julia/site/v0.7/Test/src/Test.jl:778
  macro expansion at ./util.jl:310 [inlined]
  top-level scope at ./<missing>:19
  eval at ./boot.jl:289
  #runtests#1 at /tmp/julia/share/julia/test/testdefs.jl:25
  #runtests at ./<missing>:0 [inlined] (repeats 2 times)
  #122 at /home/circleci/project/usr/share/julia/site/v0.7/Distributed/src/process_messages.jl:269
  run_work_thunk at /home/circleci/project/usr/share/julia/site/v0.7/Distributed/src/process_messages.jl:56
  macro expansion at /home/circleci/project/usr/share/julia/site/v0.7/Distributed/src/process_messages.jl:269 [inlined]
  #121 at ./event.jl:92

[amitmurthy]

Has anybody seen the Error deserializing a remote exception before?

In this case, it appears that Test.TestSetException is not exported and hence the deserialization of the RemoteException (which wraps the TestSetException) is failing.

[amitmurthy]

The actual test failure should be at

finish at /home/circleci/project/usr/share/julia/site/v0.7/Test/src/Test.jl:778

[vchuravy]

ok modulo CI, I plan to merge this later today.

[vchuravy]

The elusive 5/5