Bug in stdlib/a64l.c

[Brooks Moses]

Hi,

I just noticed what looks like a bug in stdlib/a64l.c, when I happened
to be looking at it just now.  I apologize for not having time to do up
a proper patch to fix it (much less add test coverage, etc.), but
thought I should at least send an email.

Towards the end of the function, there are the following lines:

>         case 'x':
>         case 'y':
>         case 'z':
>           digit = (ch - 'A') + 38;

That should, I believe, be (ch - 'a'), with a lowercase 'a'.

- Brooks