[ANN] new internal jpeg needs nasm

[Matúš Kukan]

Hi,

I am working on replacing internal jpeg with jpeg-turbo.
https://gerrit.libreoffice.org/#/c/12402/

Once it hits master, you will need to get nasm tool to build it.
http://www.nasm.us/
Info about how to install it, is in our configure.

I've avoided cmake by using our great gcc-wrappers. Thanks for that!

It should be ready now, I've just not tested it on OS X.

Thanks,
Matus