spitting/vomitting blood

BUR #50412 is pending approval.

create implication spitting_blood -> blood
create implication vomiting_blood -> blood
create implication vomiting_blood -> vomiting

self-explanatory

Vomiting blood, spitting blood, and coughing blood are all nearly the same thing. Most things under vomiting blood are more like coughing or spitting than vomiting from the stomach.