issue1538 durack1 update Cython 0.23.3 to 0.23.4

[durack1]

Fix #1538 - Update Cython 0.23.3 to 0.23.4

[doutriaux1]

failed on mc full

[durack1]

@doutriaux1 looks to me like it never even got to ctest

It seems your --old-and-unmanageable kludge tripped things over:

CMake Error at /Users/doutriaux1/bot/build/Cython-prefix/src/Cython-stamp/Cython-install.cmake:56 (message):
  CTEST_FULL_OUTPUT
   Command failed: 1
   '/Users/doutriaux1/bot/build/install/bin/python' 'setup.py' 'install' '--old-and-unmanageable'
   From /Users/doutriaux1/bot/build/Cython-prefix/src/Cython-stamp/Cython-install-out.log
  -------------------------------------------------
  Unable to find pgen, not compiling formal grammar.
  -------------------------------------------------
   From /Users/doutriaux1/bot/build/Cython-prefix/src/Cython-stamp/Cython-install-err.log
  -------------------------------------------------
  usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
     or: setup.py --help [cmd1 cmd2 ...]
     or: setup.py --help-commands
     or: setup.py cmd --help
  error: option --old-and-unmanageable not recognized

It looks to me like the steps undertaken in #1192 are likely going to need to be revisited in this Cython update..

[durack1]

@doutriaux1 looks like 1 of the 2 crunchy issues is the UV-CDAT logo on the test file and not the baseline

[durack1]

@doutriaux1 does cython_deps.cmake need setuptools_pkg added?

[durack1]

@doutriaux1 looks like all the macbots have hung, wanna reboot/refresh them?

[durack1]

@doutriaux1 this now looks good, only crunchy failed and the error is the standard:

The following tests FAILED:
     88 - vcs_test_background_mode_rotate (Failed)