Log Message:
Update osh to 20080629, requested by PR 39067.

Significant changes include the following:

1) Support was added for 3 new command-line options: "-i", \ 
"-l", and "-v".

2) Support was added for 3 new rc files.

   *) This includes a system-wide "osh.oshrc",
      a system-wide "osh.logout", and a user ".osh.logout".

See http://v6shell.org/src/CHANGES for full details.