Merge branch 'maint'

* maint: diff.c: diff.renamelimit => diff.renameLimit in message wt-status: fix possible use of uninitialized variable fast-import: clarify "inline" logic in file_change_m run-command: always set failed_errno in start_command transport: drop "int cmp = cmp" hack drop some obsolete "x = x" compiler warning hacks fast-import: use pointer-to-pointer to keep list tail