* Add env_util files and update getenv_bool

* More getenv cleanup

* More env cleanup

* Add env var file

* fix doc file

* cleanup

* Update doc string

* Fix compile errors

* Fix compile error

* Fix compile error

* Fix one more

* Fix compile error

* Revert MLIR changes due to failing test

* Revert MLIR changes due to failing test

* Fix compile error

* Fix env var usage
Co-authored-by: Sang Ik Lee <sang.ik.lee@intel.com>
Co-authored-by: Scott Cyphers <diyessi@users.noreply.github.com>