[PATCH] Relocation overflow with modules on Alpha

[PATCH] Relocation overflow with modules on Alpha

From: Ivan Kokshaysky <ink@jurassic.park.msu.ru>

Larger modules fail to load with the message "Relocation overflow vs
section 17", or some other section number.

This failure happens with GPRELHIGH relocation, which is *signed* short,
but relocation overflow check in module.c doesn't take into account the
sign extension.