POLICE in the Depok district headquarters were in an uproar. Four of their prisoners were acting strangely, as if they were really plastered, eyes bloodshot. Local police chief Adj. Chief Comr. Suhardi Alius hurriedly ordered his men to sweep the cells and make unannounced inspections of the detainees at the beginning of last week. The results were serious. Urine tests proved positively that all four had been smoking the low-grade heroin know