Fix a test failure in spf grades.
tests/hard_coded/backend_external.m:
tests/hard_coded/from_int_uint32.m:
tests/hard_coded/parse_number_from_io.m:
tests/hard_coded/remove_file.m:
tests/hard_coded/uint_arith.m:
As above.
tests/hard_coded/parse_number_from_io.exp4:
Alternative expected output for spf grades.
library/uint.m:
Add (//)/2, (/)/2 and rem/2 for uints.
Add mod/2 and div/2 as synonyms for the above.
tests/hard_coded/uint_arith.m
Enable the division tests.
tests/hard_coded/uint_bitwise.exp*:
Update the expected outputs.
tests/hard_coded/Mmakefile:
tests/hard_coded/uint_arith.m:
tests/hard_coded/uint_arith.exp*:
As above. (The .exp file is for 64-bit machines; the .exp2 for
32-bit.)
