qemu: update to QEMU 1.3.1

[ehabkost]

• Add pixman dependency (using --with-system-pixman instead of the pixman source tree bundled with QEMU)
• Add libintl dependency

Signed-off-by: Eduardo Habkost ehabkost@raisama.net

I expected the binaries built using llvm-gcc to be completely broken, like the last time I tested it, but they are surprisingly working (I am booting an Ubuntu disk image right now). But I plan to send a pull request changing it to use clang, because inline asm support in i686-apple-darwin11-llvm-gcc-4.2 is not very reliable.

[ehabkost]

The branch was updated to force CC=clang.

[ruda]

Just a recommendation,try to submit changes in just one commit, because it's easier later to cherry pick and commit on other branches (other OS X versions).