Minor inconsistency in tarball name vs untarred name for 32 bit package #45

I noticed that https://iojs.org/download/release/v1.1.0/iojs-v1.1.0-linux-x86.tar.gz unpacks as /iojs-v1.1.0-linux-ia32 instead of iojs-v1.1.0-linux-x86. Ideally this would be consistent with node which uses x86 for the directory inside the tarball.