Tidy i386 signal handler

[guru <guru@xxxxxxxxxxxxxxxxx>]

actually  this works better
+         _gregs[REG_EIP] += 2;  with  this the libgcj isn't libgij like 
the first one I tried
+         _gregs[REG_EIP] = (greg_t)_eip;   not sure if this is right 
even thou it seems to be working