Revert "8237: replace cpu flag get and sti_if with save/restore CPU flags"
Revert "8237: replace cpu flag get and sti_if with save/restore CPU flags"

This reverts commit 6f54107ed263d427ae1e198f967c2cc5eea4c17a.

joncampbell123/doslib,joncampbell123/doslib,joncampbell123/doslib,joncampbell123/doslib,joncampbell123/doslib,joncampbell123/doslib