Update to 1.8.2

Remove the now unneeded post-patch section
Enforce usage of our INSTALL_PROGRAM instead of manually strip
Pass variables via MAKE_ARGS to avoid patching
Remove now useless USES=pathfix

PR: 228060
Submitted by: bapt
Reported by: Yann Collet (Upstream)
Reviewed by: Martin Waschbüsch (maintainer)
Approved by: Martin Waschbüsch (maintainer)