The Jester is rarely on these forums... try down at lwjgl.org, where I notice he's already begun work on ILU.
Actually I visit these forums every day. Missed the PM though.
ILU is in CVS and limited testing shows that it works. Only iluRegionfv and iluRegioniv are not implemented yet. Also I noticed iluRotate3D is not implemented in the native lib, but is shown in the docs. Also the docs are a little out of date.
As far as SWIG goes, I don't know what you are talking about. I used JNI to implement it.
ps. ILUT is not far behind.