Byte string comparison bug

[thisbefruit]

Comparing two byte strings is buggy:

Incorrect answer when first string is a substring of the second:

melorun> "mel" == "melo"
1

melorun> "mel" == "melorrrrrrrrrrr"
1

melorun> x"deadbeef" == x"deadbeef02"
1

Also this:

melorun> x"deadbeef02" == x"deadbeef"
1

Fails when first string is longer than second, for both ascii and hex:

melorun> "meloooo" == "mel"
execution failed

melorun> x"deadbeef0234" == x"deadbeef"
execution failed

[nullchinchilla]

This is temporarily fixed by restricting equality comparison to integers. A complete solution would require a better formalization of values of what types can even be compared with == (in short, types that have statically known sizes, or finite unions of such types)