Use some features of sh(1) which I didn't know about until today ("read"

can read two variables at once; and suffix pattern deletion) to make the
extract command fork fewer processes.

With the portsnap snapshot and the ports tree in swap-backed memory
disks on my 1.4GHz laptop, this reduces 178800 processes and 195/56/126
seconds of real/user/sys time to 44600 processes and 103/34/60 seconds.

0 files changed, 0 insertions, 0 deletions