text: AP: Witness Shows Weakness in Bashir Case JAKARTA, Indonesia - Prosecutors have pinned their case against an alleged terror chief on a former comrade, who plans to testify that cleric Abu Bakar Bashir heads the al-Qaida-linked network blamed for numerous attacks, including last week's bombing of the Australian Embassy.    But in an interview with The Associated Press, key witness Nasir Abbas insisted that the Jemaah Islamiyah network is not a terrorist organization and he described Bashir as "just an Islamic teacher," saying he didn't know whether the 66-year-old played any role in terrorism...