[PATCH] MC: Improve the .fill directive's compatibility with GAS

[Jim Grosbach]

  Dunno if it's a dealbreaker, but the result with .long directives seems a lot more readable to me. I don't expect (usually) to see .asciz used for anything that's not a string, so this looks really odd.

  In a perfect world, the code would pad out the end of the fill with .short and .byte directives rather than ever using .asciz, but that's probably too much to ask. :)

http://llvm-reviews.chandlerc.com/D2667