illumos gate

When running the full testsuite from the system/test/ksh93 package using the instructions in /opt/ksh93-tests/README.tests, there are a few failures that should be investigated and fixed:

test builtins failed at 2021-08-04+13:43:35 with exit code 1 [ 161 tests 1 error ]
test enum failed at 2021-08-04+13:45:17 with exit code 1 [ 17 tests 1 error ]
test subshell failed at 2021-08-04+13:52:56 with exit code 1 [ 64 tests 1 error ]
test sun_solaris_cr_6805794_character_to_wchar_not_working failed at 2021-08-04+14:04:48 with exit code 1 [ 2 tests 1 error ]
test sun_solaris_cr_6862121_shbinexec_kernel_module_defunct failed at 2021-08-04+14:11:55 with exit code 1 [ 7 tests 1 error ]
test sun_solaris_cr_6904575_cut_-d_with_multibyte_character_no_longer_works failed at 2021-08-04+14:17:39 with exit code 1 [ 7 tests 1 error ]
test sun_solaris_cr_6904878_join_-t_no_longer_works_with_multibyte_char_separator failed at 2021-08-04+14:17:39 with exit code 1 [ 7 tests 1 error ]
test sun_solaris_locale_misc failed at 2021-08-04+14:18:40 with exit code 1 [ 7 tests 1 error ]
test variables failed at 2021-08-04+14:18:53 with exit code 1 [ 114 tests 1 error ]