Made it possible for mob to be infected with several viruses at once.
Changed how 'greater' effects are picked, now it's var-based, not type-based.
That'll let 'greater' and 'lesser' viruses pick low-stage symptoms from same pool without duplicating them.
Also sorted effect datums by stage in effect.dm.
Fixed runtime in blood transfer.
Fixed cure machine producing virus blood wrong.
Changes to existing syndromes:
-Cough : now has chance to infect people around mob.
-Telepathy : now should properly give powers to the mob.

New syndromes:
-Topographical Cretinism : confusing directions, much like drunk effect.
-Blackout : short-time blindness
OCD commit, makes capitalizations uniform
Should make unusable limbs treated as such.
Added fever to the virus progress.
Two new syndromes:
-Retrovirus : scrambles DNA.
-Shutdown : limbs become unusable. Reversed when cured
-Fragile Bones :
Two new syndromes, ideas stolen from TG's advanced diseases:
-Balding
-Stimulant - generates hyperzine.

Two more:
-Longevity : heals small amount of damage and some broken bones when activated. When healed deals same amount of damage.
-DNA degradation : deals tiny amount of clone damage

Also made retrovirus deal clone damage as well.
gave virus slight chance to change antibodies they could be cured with.
Fixes issue with mobs running fever up to ~30,000 C.
Fixes some nasty issues with virus references being same all over the place.