Disable gnome-keyring-manager in Live mode

<seb128> cjwatson: well, I'm not sure how network-manager will react when trying to store the passphrase in gnome-keyring if gnome-keyring is not running, I didn't try that
<seb128> cjwatson: same for evolution (or other applications using gnome-keyring)
<seb128> cjwatson: you can try, but I would not be surprised if those display errors if gnome-keyring is not working

Actually, while there may be a memory benefit to disabling it, I actually think this is one of the more useful things to run on the live CD. A fairly common use of live CDs is when you're in an untrusted environment and want an SSH client or similar; you can boot from your trusted media and be safe at least from software malice (although a keylogger could still catch you out; it depends on the level of risk involved). In that situation, it seems to me that gnome-keyring-manager might be quite useful.

Since the Live CD doesn't retain the contents of the Gnome keyring after a reboot, there is little use to save information in it in the first place. I am annoyed that every time I run the Live CD and connect to a wireless network, I am asked for a Gnome keyring password.

As a proof of concept, I deleted /usr/bin/gnome-keyring-daemon and Network Manager runs just fine, without asking for the extraneous password any more.

Also, it makes no apparent sense to treat gnome-keyring differently and kwallet differently (disable one but not the other on the Live CD).