library/table_builtin.m:
Add the various tabling primitives -- they could not previously
be added until part 1 of the fixed size integer change had
bootstrapped.
library/table_statistics.m:
runtime/mercury_tabling.h:
Update the table_step_kind/0 type and its C version to cover the fixed
size integer types. (The corresponding type in compiler/hlds_pred.m
has already been updated.)
tests/tabling/Mmakefile:
tests/tabling/fib_int{8,16,32}.{m,exp}:
tests/tabling/fib_uint{8,16,32}.{m,exp}:
Test tabling for each of the fixed size integer types.
