Enhancements: ------------- * detect "used" variables in build.sh, bld.bat and any output scripts, in addition to what already existed in meta.yaml. Used variables end up in the hash. #2576 * don't merge build and host prefixes. We used to do this when host subdir == build subdir. Keep them separate, so that build tools in build prefix won't ever interfere with software installed to host, to be packaged. #2579 Bug fixes: ---------- * exclude grouped keys from zip_keys when computing hashes. Only direct dependencies affect the hash. #2573 * fix always_include_files usage omitting other ordinarily installed files #2580