Solipsism damage to psi made less spammy

Mind Storm damage reduced and feedback cost increased
Mind Storm bolts now pass through friendly targets
Nightmare damage reduced
Reduced range on most solipsist talents to 7
Antimagic disruption made more obvious in the combat log
Changed the power source on many artifacts to more appropriate ones
Purging egos now give a saving throw
Amulets and Ring egos reworked; all otehr egos will not give effect immunities but them; but they will have much higher values

git-svn-id: http://svn.net-core.org/repos/t-engine4@5631 51575b47-30f0-44d4-a5cc-537603b46e54