qrefresh: relocate message/patch-header handling to delay message determination Before this patch, commit message for refreshed MQ changeset is determined, and written into refreshed patch file before "localrepository.commit()" invocation. This makes refactoring to use "editor" argument of "commit()" instead of explicit "ui.edit()" invocation in succeeding patch difficult. This patch relocates message/patch-header handling to delay message determination.