While at it:
- Fix typo in the security warning.
- Correct one of the master sites.
- List the master site which accepts passive ftp before one which doesn't.
- So remove the message that suggests to unsetenv FTP_PASSIVE_MODE.
The problem with temporary file/directory permission, which have been
dealt with by patches/patch-a[b-i] seems to have gone away.
However, I haven't examined the rest of the code to determine whether
security problems with this program have been corrected.
(CF: FreeBSD-SA-00:04.)
Show security warning at pre-fetch and the end of do-install.
Now user must explicitly say that she wants to build this program,
using ``make FORCE_BUILD=YES'' due to the security problems.
