Create 32 bit IcedTea-Web RUST exe for win_x86-32

Currently icedtea-web is not being included in the 32 bit windows jdk because it requires a 64 bit operating system to run it.

This issue is for the creation of a 32 bit Windows build which could then be included.

An alternative might be to bundle the 64 bit built icedtea-web version anyway, which would work OK on 64 bit Windows (it would still launch the 'correct' 32 bit jdk), but would not be a solution for users with 32 bit operating systems.