PRETORIA, South Africa — Hunched over, vomiting into a bucket by his feet and retching loudly, Oscar Pistorius was vividly reminded at his murder trial Monday of the gruesome injuries he inflicted on his girlfriend when a pathologist described how the Olympian fatally shot her multiple times with bullets designed to cause maximum damage. The testimony by Prof. Gert Saayman, who performed the autopsy on Reeva Steenkamp's body, was so graphic that it was not broadcast or reported live on social media by journalists under an order from Judge Thokozile Masipa.