new modules (moved from being .pre.pike files)

Rev: lib/modules/array_functions.pmod:1.1
Rev: lib/modules/fifo.pmod:1.1
Rev: lib/modules/getopt.pmod:1.1
Rev: lib/modules/process.pmod:1.1
Rev: lib/modules/simulate.pmod:1.1
Rev: lib/modules/stack.pmod:1.1
Rev: lib/modules/stdio.pmod:1.1
Rev: lib/modules/string_functions.pmod:1.1