As an optimization (in simple, well used cases) only call cat ${.ALLSRC} when
generating files from various sources instead of calling cat ${.ALLSRC} | sed

The perl case was skipped because it's not being used in the tree at this time
Commit missing header for sys/time.h compat on NetBSD to unbreak the amd64/i386
build

Pointyhat to: me (forgot to svn add it sooner)