[PR] Moves the silicon channel implant to a limited manudrive. Gives the manudrive...

[rdcb]

Borgs use the silicon channel, not guardbuddies. Besides, rogue AIs aren't completely out of options if people take implants, the silicon PDA group is inaccessible to everyone else except packet sniffers. (Though not many silicons seem to know about the PDA thing, maybe it should be added to the wiki somewhere?)

If the issue eventually gets bad enough that it does need a manudrive, though, it should probably be in the MD's locker instead of RD's for reasons explained by Herb.