tree 5d9f60c8f29ba3b1436ff0cac21d4a8e7c4b2025
parent 50e1783a7ed84bf5a8ede25a2fe52920882cef3b
author rsc <devnull@localhost> 1084662822 +0000
committer rsc <devnull@localhost> 1084662822 +0000
golang-hg 890cd9e53be3886bd4106e1c0ff3ba77544e8d31

restore current directory after threadexec.
this is dodgy.