nasm-compatible option support

[Peter Johnson]

On Sat, 28 Jul 2007, Mike Frysinger wrote:
> nasm is lazy with option parsing ... it'll take "-i" in place of "-I" and so
> forth.  can we get these added to yasm:
> -d: alias to -D
> -u: alias to -U
>
> there are some packages out there which rely on this :(

Disappointing that it's so lazy, but I don't have an issue with adding 
these options, particularly seeing as I've already done so for "-i".

Committed in r1902.  I'll probably roll a 0.6.2 before too long that will 
incorporate this in addition to a few other fixes that have happened over 
the past month.

Peter